under,i get blank grid and now i get error a message ,
(error loading file_record number 44 grid1 or one of its member control source alias 'table4' is not found)

The easiest thing to do is to put table4 in the form's DE and then it will be opened automatically as long as AutoOpenTables is set to .T. ( the default )

What I really wanted to know is - what are you trying to accomplish with this ZAPping? We may be able to help you find a better solution - I suspect that a parameterized view may fit the bill here but I will not know until you tell me what you are trying to do.