[DTV]

I'm pretty sure the string you have there exceeds 128 characters, meaning it won't show as that's the limit for SendClientMessage. Any string you try to send through SendClientMessage that's over 128 characters simply won't send, so the only way to fix it is to reduce the amount of characters in the string.

Also, 2000 for the string size is way too much for a string variable you should try reducing it to just 128 if at all possible.