Memory editing howto create more storage

I'm working on a problem using the Cheat Engine software. I have located an array of 12 bytes in memory that I would like to change. The problem is that the array holds 6 double byte unicode characters. I need to modify the string, witch I can do. I'm stuck at how I can give myself more storage for more characters. I can't simply write more characters to the address because I overrun and crash the application. Concept wise I'm wondering if its feesable to redirect the process reading 开发者_JAVA百科the memory to somewhere where I can store more characters. But how do do something to that effect is beyond me at the moment.

D.