title: SAP Fiori MyInbox with SWFVISU Webdynpro can't use DYNPARAM
body: <p>I'm using SAP Fiori MyInbox. On specific Task I want to open a Webdynpro Application with a custom parameter (an Id which is not Workitem-Id), which is needed by the Webdynpro. So I thougt I can use SWFVISU configuration and so I did the following:</p>
  
  <p><a href="https://i.stack.imgur.com/Dlz5I.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Dlz5I.png" alt="enter image description here"></a></p>
  
  <p>If I use the "Open Task" Button in the MyInbox it tries to open the Webdynpro Application. Then I'm getting:
  <a href="https://i.stack.imgur.com/OXjjg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OXjjg.png" alt="enter image description here"></a></p>
  
  <p>I'm using the Parameter from the Task-Container of the corresponding Task. Also tried a Parameter from the Workflow-Container with same result. If I use a hardcoded Id for the Parameter like <em>ESCALATION_FORM=00555234232394023</em> it works as expected.</p>
  
  <p>Someone has an idea!?</p>