diff --git a/pom.xml b/pom.xml
index de68997..1a88181 100644
--- a/pom.xml
+++ b/pom.xml
@@ -84,6 +84,12 @@
 			<artifactId>pipeline-model-definition</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.jenkins-ci.plugins</groupId>
+			<artifactId>extended-choice-parameter</artifactId>
+			<version>0.82</version>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.mockito</groupId>
 			<artifactId>mockito-core</artifactId>
diff --git a/src/main/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedTimerTrigger.java b/src/main/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedTimerTrigger.java
index a7257e9..b7fbda2 100644
--- a/src/main/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedTimerTrigger.java
+++ b/src/main/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedTimerTrigger.java
@@ -21,6 +21,8 @@
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import net.sf.json.JSONObject;
+
 /**
  * {@link Trigger} that runs a job periodically with support for parameters.
  * 
@@ -62,7 +64,15 @@ private List<ParameterValue> configurePropertyValues(Map<String, String> paramet
 			if (parameterValues.containsKey(paramDefinition.getName())) {
 				ParameterizedStaplerRequest request = new ParameterizedStaplerRequest(
 						parameterValues.get(paramDefinition.getName()));
-				ParameterValue value = paramDefinition.createValue(request);
+				ParameterValue value;
+				if (paramDefinition.getClass().getName().equals("com.cwctravel.hudson.plugins.extended_choice_parameter.ExtendedChoiceParameterDefinition") &&
+						paramDefinition.getType().equals("PT_JSON")) {
+					JSONObject jO = new JSONObject();
+					jO.put("value", parameterValues.get(paramDefinition.getName()));
+					value = paramDefinition.createValue(request, jO);
+				} else {
+					value = paramDefinition.createValue(request);
+				}
 				if (value!= null) {
 					defValues.add(value);
 				} else {
diff --git a/src/test/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedSchedulerTest.java b/src/test/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedSchedulerTest.java
index 48245e1..ee9acb9 100644
--- a/src/test/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedSchedulerTest.java
+++ b/src/test/java/org/jenkinsci/plugins/parameterizedscheduler/ParameterizedSchedulerTest.java
@@ -1,5 +1,6 @@
 package org.jenkinsci.plugins.parameterizedscheduler;
 
+import com.cwctravel.hudson.plugins.extended_choice_parameter.ExtendedChoiceParameterDefinition;
 import hudson.model.FreeStyleProject;
 import hudson.model.Job;
 import hudson.model.ParameterDefinition;
@@ -106,6 +107,30 @@ public void declarative() throws Exception {
         assertThat((String) p.getLastCompletedBuild().getAction(ParametersAction.class).getParameter("foo").getValue(), is("bar"));
     }
 
+    @Test
+    @Issue("JENKINS-49372")
+    public void extendedChoiceJson() throws Exception {
+        FreeStyleProject p = r.createFreeStyleProject();
+        p.addProperty(new ParametersDefinitionProperty(new ExtendedChoiceParameterDefinition("foo", ExtendedChoiceParameterDefinition.PARAMETER_TYPE_JSON, "",
+                "", "", "def jsonSlurper = new groovy.json.JsonSlurper()\n" +
+                "def object = jsonSlurper.parseText('{\"schema\":{\"type\":\"object\",\"title\":\"Car\",\"properties\":{\"make\":{\"type\":\"string\",\"enum\":[\"Toyota\",\"BMW\",\"Honda\",\"Ford\",\"Chevy\",\"VW\"]},\"model\":{\"type\":\"string\"},\"year\":{\"type\":\"integer\",\"enum\":[1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014],\"default\":2008}}}}')\n" +
+                "return object", "", "", "", "",
+        "", "", "" , "", "", "",
+                "", "", "", "", "", "",
+        "", "", "", "", false, false,
+                0, "", "")));
+        assertThat(p.getLastCompletedBuild(), is(nullValue()));
+        Trigger<Job> t = new ParameterizedTimerTrigger("* * * * *%foo={\"make\":\"Toyota\",\"model\":\"test\",\"year\":2008}");
+        t.start(p, true);
+        p.addTrigger(t);
+        new Cron().doRun();
+        assertThat(p.isInQueue(), is(true));
+        r.waitUntilNoActivity();
+        // Build should complete successfully but will not have any value
+        assertThat(p.getLastCompletedBuild(), is(notNullValue()));
+        assertThat(p.getLastCompletedBuild().getAction(ParametersAction.class).getParameter("foo").getValue(), is("{\"make\":\"Toyota\",\"model\":\"test\",\"year\":2008}"));
+    }
+
     @Test
     @Issue("JENKINS-49372")
     public void nullValueCreated() throws Exception {