text detection in vision assistant

[6hari9]

hi all...i have labview 11 installed with me along with vision assistant. i found out that using OCR we can train it to read a string. but is it only 1 string for a program? even though i can train the progrm with all 26 letter templates, it recognises on the original string..

please guide me to develop a program in OCR where it can read any string that i show to it...please i need your help. thanks in advance