diff --git a/.idea/kobalt.xml b/.idea/kobalt.xml
index 22821d8..b43f7c3 100644
--- a/.idea/kobalt.xml
+++ b/.idea/kobalt.xml
@@ -6,6 +6,11 @@
         <option name="autoDownloadKobalt" value="true" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="kobaltHome" value="$USER_HOME$/.kobalt/wrapper/dist/kobalt-0.847" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+          </set>
+        </option>
         <option name="useAutoImport" value="true" />
       </KobaltProjectSettings>
     </option>
diff --git a/.idea/modules.xml b/.idea/modules.xml
index de1fa43..48f8f9e 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -3,6 +3,7 @@
   <component name="ProjectModuleManager">
     <modules>
       <module fileurl="file://$PROJECT_DIR$/kobalt/Build.kt.iml" filepath="$PROJECT_DIR$/kobalt/Build.kt.iml" />
+      <module fileurl="file://$PROJECT_DIR$/kobalt-exec.iml" filepath="$PROJECT_DIR$/kobalt-exec.iml" />
     </modules>
   </component>
 </project>
\ No newline at end of file
diff --git a/example/kobalt/src/Build.kt b/example/kobalt/src/Build.kt
index a55bb57..69a22e0 100644
--- a/example/kobalt/src/Build.kt
+++ b/example/kobalt/src/Build.kt
@@ -4,7 +4,10 @@ import com.beust.kobalt.plugin.application.*
 import com.beust.kobalt.plugin.java.*
 import net.thauvin.erik.kobalt.plugin.exec.*
 
-val pl = plugins(file("../kobaltBuild/libs/kobalt-exec-0.1.jar"))
+val repos = repos("https://dl.bintray.com/ethauvin/maven/")
+
+//val pl = plugins(file("../kobaltBuild/libs/kobalt-exec-0.5.0-beta.jar"))
+val pl = plugins("net.thauvin.erik:kobalt-exec:0.5.1-beta")
 
 val p = project {
 
@@ -37,7 +40,7 @@ val p = project {
     }
 
     exec {
-        commandLine(args = listOf("ls", "-l"), dir = "../libs", fail = setOf(Fail.NORMAL))
-        commandLine(listOf("cmd", "/c", "echo", "Test"), os = listOf("Win", "Windows"), fail = setOf(Fail.NORMAL))
+        commandLine(listOf("cmd", "/c", "echo", "Test"), os = setOf("Win"))
+		commandLine(args = listOf("ls", "-l"), dir = "../libs", os = setOf("Linux", "Win"))
     }
 }
\ No newline at end of file
diff --git a/kobalt-exec.iml b/kobalt-exec.iml
new file mode 100644
index 0000000..55807a7
--- /dev/null
+++ b/kobalt-exec.iml
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="kobalt-exec" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="KOBALT" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="false">
+    <output url="file://$MODULE_DIR$/kobaltBuild/classes" />
+    <output-test url="file://$MODULE_DIR$/kobaltBuild/test-classes" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/kotlin" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/kotlin" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/kobaltBuild" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library name="Kobalt: com.beust:kobalt-plugin-api:jar:0.842">
+        <CLASSES>
+          <root url="jar://$USER_HOME$/.kobalt/repository/com/beust/kobalt-plugin-api/0.842/kobalt-plugin-api-0.842.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library" scope="TEST">
+      <library name="Kobalt: org.apache.ant:ant:jar:1.7.0">
+        <CLASSES>
+          <root url="jar://$USER_HOME$/.kobalt/repository/org/apache/ant/ant/1.7.0/ant-1.7.0.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library" scope="TEST">
+      <library name="Kobalt: com.beust:jcommander:jar:1.48">
+        <CLASSES>
+          <root url="jar://$USER_HOME$/.kobalt/repository/com/beust/jcommander/1.48/jcommander-1.48.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library" scope="TEST">
+      <library name="Kobalt: org.beanshell:bsh:jar:2.0b4">
+        <CLASSES>
+          <root url="jar://$USER_HOME$/.kobalt/repository/org/beanshell/bsh/2.0b4/bsh-2.0b4.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library" scope="TEST">
+      <library name="Kobalt: org.apache.ant:ant-launcher:jar:1.7.0">
+        <CLASSES>
+          <root url="jar://$USER_HOME$/.kobalt/repository/org/apache/ant/ant-launcher/1.7.0/ant-launcher-1.7.0.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file
diff --git a/kobalt/src/Build.kt b/kobalt/src/Build.kt
index bd1af62..eb66fc3 100644
--- a/kobalt/src/Build.kt
+++ b/kobalt/src/Build.kt
@@ -17,7 +17,7 @@ val p = project {
     name = "kobalt-exec"
     group = "net.thauvin.erik"
     artifactId = name
-    version = "0.5.0-beta"
+    version = "0.5.1-beta"
 
     pom = Model().apply {
         name = project.name
@@ -61,6 +61,6 @@ val p = project {
     }
 
     bintray {
-        publish = false
+        publish = true
     }
 }
diff --git a/src/main/kotlin/net/thauvin/erik/kobalt/plugin/exec/ExecPlugin.kt b/src/main/kotlin/net/thauvin/erik/kobalt/plugin/exec/ExecPlugin.kt
index 7c94f19..f042b55 100644
--- a/src/main/kotlin/net/thauvin/erik/kobalt/plugin/exec/ExecPlugin.kt
+++ b/src/main/kotlin/net/thauvin/erik/kobalt/plugin/exec/ExecPlugin.kt
@@ -147,13 +147,14 @@ enum class Fail() {
 }
 
 data class CommandLine(var args: List<String> = emptyList(), var dir: String = "",
-                       var os: List<String> = emptyList(), var fail: Set<Fail> = emptySet())
+                       var os: Set<String> = emptySet(), var fail: Set<Fail> = setOf(Fail.NORMAL))
 
 data class ExecConfig(val project: Project) {
     val commandLines = arrayListOf<CommandLine>()
 
-    @Directive fun commandLine(args: List<String> = emptyList(), dir: String = "", os: List<String> = emptyList(),
-                               fail: Set<Fail> = emptySet()) {
+    @Directive
+    fun commandLine(args: List<String> = emptyList(), dir: String = "", os: Set<String> = emptySet(),
+                    fail: Set<Fail> = setOf(Fail.NORMAL)) {
         if (args.size > 0) commandLines.add(CommandLine(args, dir, os, fail))
     }
 }