Filling of variable values in IP for Excel interface

Hi Experts,

I am creating an excel interface for planning using IP. While I was calling a planing function using a commnd button, the system is not accepting the variable values which i have entered during the report execution time and it is throwing the error message which says 'Variable values are need to be entered'.

Could you please let me know how can I fill the variable values dynamically for a planning function in the Excel interface?

Thanks in advance,

Raj