SSRS Reports : The value is unfoundable in the matching

Hello,

With Visual Studio, I created a SSRS Report :

So, I've deployed the SSRS Reports for testing in Microsoft Dynamics AX.

In Microsoft Dynamics AX, in my controller class, I put the following line to say what's the SSRS Report that I want to use(see the image below) :

But when I launch my SSRS in AX, I've this following message :

The value 'WMSJournalTransDS_DynamicParameter' is unfoundable in the matching

Do you have a solution ?

Thank you