Creating a Dashboard with Stored Procedure

Hello Experts

I have a doubt. I'm starting to develop Dashboards for SAP b1.

How do I pass a parameter for a procudure and can operate in DashBoard?

I am using the example below, where the procudure brings the total billed a certain seller.

Ex: Exec Dash03 (SELECT T0 [SlpName] FROM OSLP T0 WHERE T0 [SlpName] = '[% 0]')

Today I want to integrate the Dashboard to SAP Business One,

and for this to work, it is necessary that within SAP B1 there is a query that results to feed the DashBoard.

I tried using a variable to receive the name of the seller, and then pass the variable to the stored procedure, but still did not work out.