A question on how to do something in GML

Ok, so here what I want to happen.

When the player hits a trigger the bomb blows up. I can't figure out how to make the bomb blow up!!! Here's what I tried
In Step Event:

if place_meeting(0,0,o_player)//when the player touches the trigger
{
sprite_index = s_trigger//dont matter here
image_index=1//dont matter here
image_speed=0//dont matter here
o_tnt.instance_change(o_explosion,1)//ERRRROOOOORRRRRRRR NOOOOOO
}

Heres the Error:

FATAL ERROR in
action number 1
of Step Event
for object o_trigger:

Whats up with that????!!!!
COMPILATION ERROR in code action
Error in code at line 6:
o_tnt.instance_change(o_explosion,1)

at position 8: Variable name expected.

What you're too good to use a collision event?

Lol, that has nothing to do with the error at all!

well that was a waste of a topic.....

o_tnt.instance_change(o_explosion,1)//ERRRROOOOORRRRRRRR NOOOOOO

WHY WHY DOES THAT CAUSE AN ERROR!!!!??????

Just use collision event. And the o_TNT.instancechsnge is being recognized as a variable.

Do:
with(o_tnt){instance_change(o_explosion,1)} //script by carny

Some how I don't think gamemaker would recognize the variable "Carny"

Oh right you make a constant; carny = awesome

LOL I realized what the error was!! Soooooo simple I didn't make it relative for if the player was touching!!! Hahahahahahahahahahahahahah

Thanks for helping tho guys I appreciate it!

We helped?

with(o_tnt){instance_change(o_explosion,1)} //script by carny

I used that to

:[)

\m/ n_n