AX2012 SSRS embedded / custom code

Hi all,

I am trying to add a funtion in AX2012 SSRS report under Report properties / Code (visual basic code). I am just testing a simple function at this stage.

I then called this function in an Expression. For Example,  Code.MyFunctionName("Test").

However i get following error when tried to build the report.

: MyFunctionName is invalid. InvalidIdentifier

Has anyone experienced similar issue?

Is it possible to write custom code in AX2012 SSRS?

I appreciate your comments.

Thank you

Nag