Hello comunity

I want to make a little PRG file in VFP, to import an excel file and insert records on sql server 2008.
I want on my VFP PRG files to ask me:
1- name of excel file
3. create a cursor to load records
4- verify if my reference exist on my table ST (stock) , if exist run next reference till the end of excel file.

I attach my code but the same one crash my EXE program.

Someone could give me some help to do this running OK, and also optimize some code to make more easier this routine.

Many thanks
Luis Santos