identify number of blanks in a string or char field.

Hi Friends,

I have a issue, i have two fields of char30 and the users enters numeric values in that and i have to added the data.

i have to validate the data enter by users before adding.

there are chances that users may enter values like'80 0' then i have to throug an error , how to do that. i am unable to capture that sapce between 80 and 0.

is there any Function module ?

regards

Kumar M