Thanks for you reply.
I tried to implement it and I got syntax error.
Capture.PNG 52.2 K
Hi - yes sorry. because you are using 2 variables the square brackets need to come at the beginning and end of the full string. Something like this:
Let Ext = 'External]';
Let Int = 'Internals]';
Let Prac = 'Practical]';
Let Subject1 = '[Embedded System';
Let Subject2 = '[Imformation Security Management';
Let Subject3 = '[Virtualization';
Let Subject4 = '[Ethical hacking';
will evaluate to
[Paper-I] as [Embedded System_External];
Or you can try the valid alternative mentioned by PR too.