diff --git a/test/fixtures/xml/processmaker-task-screen.part.bpmn b/test/fixtures/xml/processmaker-task-screen.part.bpmn
index 342b277..f0e2f23 100644
--- a/test/fixtures/xml/processmaker-task-screen.part.bpmn
+++ b/test/fixtures/xml/processmaker-task-screen.part.bpmn
@@ -7,6 +7,8 @@
       pm:screenRef="420f95eb-76d8-459d-b56a-ea605bea4e3f"
       pm:screenVersion="10"
       pm:dueIn="10"
+      pm:dueInVariable="{{variable_mustache}}"
+      pm:isDueInVariable="true"
       pm:notifyAfterRouting="true"
       pm:notifyRequestCreator="false"
       startQuantity="1"
diff --git a/test/fixtures/xsd/ProcessMaker.xsd b/test/fixtures/xsd/ProcessMaker.xsd
index 6a96fce..045dff2 100644
--- a/test/fixtures/xsd/ProcessMaker.xsd
+++ b/test/fixtures/xsd/ProcessMaker.xsd
@@ -16,6 +16,8 @@
                 <xsd:attribute name="interstitialScreenRef" type="xsd:string"/>
                 <xsd:attribute name="screenVersion" type="xsd:string" use="optional"/>
                 <xsd:attribute name="dueIn" type="xsd:decimal"/>
+                <xsd:attribute name="dueInVariable" type="xsd:string" use="optional"/>
+                <xsd:attribute name="isDueInVariable" type="xsd:boolean" default="false"/>
                 <xsd:attribute name="notifyAfterRouting" type="xsd:boolean" default="false"/>
                 <xsd:attribute name="notifyToRequestCreator" type="xsd:boolean" default="false"/>
                 <xsd:attribute name="assignment" type="xsd:string" default="requestor"/>
diff --git a/test/spec/xml/read.js b/test/spec/xml/read.js
index c6b69cf..7bd8718 100644
--- a/test/spec/xml/read.js
+++ b/test/spec/xml/read.js
@@ -130,6 +130,8 @@ describe('read', function() {
                     'screenRef': '420f95eb-76d8-459d-b56a-ea605bea4e3f',
                     'screenVersion': '10',
                     'dueIn': 10,
+                    'dueInVariable': '{{variable_mustache}}',
+                    'isDueInVariable': true,
                     'notifyAfterRouting': true,
                     'notifyRequestCreator': false,
                     'startQuantity': 1,