Data validation, urgent help

hello
i have set up a data validation file in fmx and when the data is valid i want it to go and play the “preview” frame, but if it is not valid i want it to stay on that frame until the person edits it to be valid. i attached the file and can’t figure out why my code is not working. any help would be greatly appreciated as i need this done ASAP.

thanks in advance.