How to add string togethor

Redone post:
Why does this happen
comm1$="none"
comm2$="not"
comm3$="never"
message$=comm1$+" "+comm2$+" "+comm3$
print "aaa:"+message$

when printedor with writeline i get

aaa: nonotnever

(yeah the spaces come in front of the string!
it should look like aaa:no not never