topic 'Unknown property used in expression': using dataOutputAssociation and process property in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/unknown-property-used-in-expression-using-dataoutputassociation/m-p/163418#M117220 <HTML><HEAD></HEAD><BODY><SPAN>Hi, I am fairly new to BPMN2 and have been doing some work with jBPM and Activiti to compare the two. I have a process that is working in jBPM and am trying to get it running in Activiti. I don't mind changing the BPMN2 to get it working, but need a little guidance!</SPAN><BR /><BR /><SPAN>In the jBPM working version my sequence flow looks like this:</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />&nbsp;&nbsp;&nbsp; &lt;bpmn2:sequenceFlow id="published..deleted" name="published..deleted" sourceRef="published..outgoing" targetRef="deleted..incoming"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:conditionExpression&gt;return "delete".equals(transition)&lt;/bpmn2:conditionExpression&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/bpmn2:sequenceFlow&gt;<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><BR /><SPAN>Activiti complains about this not returning a boolean expression, so looking at some other examples, I tried this:</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />&nbsp;&nbsp;&nbsp; &lt;bpmn2:sequenceFlow id="published..deleted" name="published..deleted" sourceRef="published..outgoing" targetRef="deleted..incoming"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:conditionExpression&gt;${"delete".equals(transition)}&lt;/bpmn2:conditionExpression&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/bpmn2:sequenceFlow&gt;<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><BR /><SPAN>But now Activiti complains that </SPAN><PRE class="language-none line-numbers"><CODE>Unknown property used in expression: ${"delete".equals(transition)}<SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN></CODE></PRE><SPAN>…</SPAN><BR /><BR /><SPAN>My 'transition' property is declared at the top of the file, like so:</SPAN><BR /><PRE class="language-none line-numbers"><CODE><BR />&nbsp;&nbsp;&nbsp; &lt;bpmn2:property id="transition"&gt;&lt;/bpmn2:property&gt;<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><BR /><SPAN>This is what my task looks like:</SPAN><BR /><PRE class="language-none line-numbers"><CODE><BR />&nbsp;&nbsp;&nbsp; &lt;bpmn2:manualTask id="published" name="published"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:ioSpecification&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:dataOutput id="published..result" name="transition"&gt;&lt;/bpmn2:dataOutput&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:inputSet&gt;&lt;/bpmn2:inputSet&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:outputSet&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:dataOutputRefs&gt;published..result&lt;/bpmn2:dataOutputRefs&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmn2:outputSet&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmn2:ioSpecification&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:dataOutputAssociation&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:sourceRef&gt;published..result&lt;/bpmn2:sourceRef&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmn2:targetRef&gt;transition&lt;/bpmn2:targetRef&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmn2:dataOutputAssociation&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/bpmn2:manualTask&gt;<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><BR /><SPAN>In the examples, I can only find ones using activiti extensions to do with forms, but I'd like to drive this process programatically.</SPAN><BR /><BR /><SPAN>Any tips appreciated, as am a bit stuck at this point!</SPAN><BR /><BR /><SPAN>Alfie.</SPAN></BODY></HTML> Tue, 20 Aug 2013 12:32:08 GMT jugglingcats 2013-08-20T12:32:08Z 'Unknown property used in expression': using dataOutputAssociation and process property https://connect.hyland.com/t5/alfresco-archive/unknown-property-used-in-expression-using-dataoutputassociation/m-p/163418#M117220 Hi, I am fairly new to BPMN2 and have been doing some work with jBPM and Activiti to compare the two. I have a process that is working in jBPM and am trying to get it running in Activiti. I don't mind changing the BPMN2 to get it working, but need a little guidance!In the jBPM working version my seq Tue, 20 Aug 2013 12:32:08 GMT https://connect.hyland.com/t5/alfresco-archive/unknown-property-used-in-expression-using-dataoutputassociation/m-p/163418#M117220 jugglingcats 2013-08-20T12:32:08Z Re: 'Unknown property used in expression': using dataOutputAssociation and process property https://connect.hyland.com/t5/alfresco-archive/unknown-property-used-in-expression-using-dataoutputassociation/m-p/163419#M117221 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>In Activiti we don't use data input and output definitions, since you can manipulate variables in the process and task context by using our API. So that would be the mean reason why this process definition is not working for you. The transition expression should refer to a transition variable you can set when starting the process instance for example.</SPAN><BR /><BR /><SPAN>Best regards,</SPAN></BODY></HTML> Wed, 21 Aug 2013 06:51:42 GMT https://connect.hyland.com/t5/alfresco-archive/unknown-property-used-in-expression-using-dataoutputassociation/m-p/163419#M117221 trademak 2013-08-21T06:51:42Z