Find and replace - regular expression

[AVR]

How do I find a line in a file to be replaced, based on the start of the line ?
I want to find the line that starts like [assembly: AssemblyVersion(" and then replace it as [assembly: AssemblyVersion("%val%)]

I have tried:

Find: ?^assembly: AssemblyVersion*
Replace: [[assembly: AssemblyVersion\("%val%"\)]]

Also tried a few more variations. The string does not seem to find a match to replace at all. What am I missing ?


P.S: I had posted the same content and got a notification for a reply. But I dont see my original post and the notification link seemed to be invalid. So, posting again.