What the hell...

[Aknts]

What is wrong with this?
It wont hide the img
if (playertouchsme) {toweapons Fish}
if (playerchats) {
if (strequals(#c,Fish)) {
this.fon==1;
setplayerprop #c,;
showimg 69,systemf.gif,playerx-1.75,playery-1.5;
showimg 80,@Arial@bc@#s(fishpounds),playerx+1.5,playery-.75;
changeimgcolors 80,0,0,0,0;
changeimgvis 80,1;
changeimgvis 69,1;
if (keydown(4)&&this.fon==1) {
hideimg 69;
hideimg 80;
this.fon=0;
}

}}