>I create one field is 12 character,but maybe only input 8 to 12 character and i think check the field last character is what, so if we only input 8 character ,than i can't check the character in the field,because the program is return space to me in the field if only have a 8 character,so i think ask all how can i check the character in this case if i not input full character in the field?

Can you be more clear? Maybe some examples of what you want to do?

Vlad