[JaTochNietDan]

pawn Код:

format(str, sizeof(str), "* %s %s", str, !strlen(params));

This piece of code doesn't make a lot of sense, why are you trying to insert the return value of the strlen function, which is also an integer, not a string like you've specified in the format.

I think what you're looking for is more along the lines of passing the string directly in there, for example:

pawn Код:

format(str, sizeof(str), "* %s %s", str, params);

strlen is for getting the length of a string, not getting the value of a string.