I understand, this is a different case.
The arguments in the command should only contain values, such as quantity/creatureID, etc.; you don't need to write anything, just list the argument values separated by commas.
If it still doesn't work, take a screenshot of the console.
Are you trying to install mods from Heroes 3 on Heroes 5?)
I think they were talking about Heroes 5 in the discussions, but whatever.
And what about the hero's name? Will "heroname" work to award a hero who captured a Crypt?