Making 2-3 lines in the Parameters

Weird question and probably the answer is "Can't", but:

I've created Reporting services page that insert values, and some of the values can be a text of 400 words, so my question is: Is there a way that I can go down a line in the Parameters? I mean, like in Word, when you press Enter... Make it present for example a 5 lines text that some of them are long and some of them are short...

Any ideas?