hi all sap experts F4 problem - no solution is coming from forum

hi all

in alv grid output ( not in selection screen) there is a input enabled field say xyz, this field is given f4 help by creating ztable, and when f4 is pressed on xyz field, it is fetching all the data related to that field, but the user wants restricted value with respect to company code and land1, the alv grid shows no of rows and company code and land1 are 1st and 2nd fields in the output.

how to restrict the value in F4 help ???

provide code pl.

thanking u in advance

rocky