Show default value of Bex Variable in the VC Variable input form

Hello,

In VC 7.31 Sp11 is there any possibility to display the default value of a Bex Variable in the Variable
input form which comes from a SAP BI Query (with an input variable with defult value). 

In my case the defaultvalue is calculated in the exit of the Bex variable.

Thanks in advance

Regards,

Valérie