1.8.9 B73 Script mc.thePlayer.sendChatMessage("Message") not working

[RAINBOW. spam]

So i have downloaded some scripts but in thoose scripts is mc.thePlayer.sendChatMessage("Message") not working. but only for me for the others it works perfectly fine.

[idk my name]

@rainbow-spam so others see your message, but you not?

[FaaatPotato]

@rainbow-spam

isn't it (small "t")

mc.thePlayer.sendChatMessage("M");

or did you just type it wrong

[RAINBOW. spam]

@idk-my-name no for others the mc... works, so they can send a chat message with a script but i can't. (and don't know why)

[RAINBOW. spam]

@faaatpotato i typed it wrong here.
(but in the script it's right.)

[Senk Ju]

Please show us the entire script.

[Painis Bot]

@senk-ju I think he/she fixed the bug him/herself