not taking the global data sheet value

[vandana sharan]

hello,

I am a new for QTP. i just open the flight reservation window and given the username and password. and just exit the application.

i had parameterize the username of the Flight application.

but its not taking the value from Global data sheet.
just throwing the error that parent window is not matching.

from object repository , i used regular expression for login window value i.e #3770 and i did #377[0-9]

but its not taking and throwing error.

pls suggest me

Thanks
Vandana