GameMaker changing room background code

[Farouk]

Hi
i am using game maker 2
i need to change the room background when a certain event happens

what i understood from the docs is that this line should do it , but it doesn't seem to work

background_index[0]= spr_store_background;

Any idea what's wrong or missing?
thanks in advance

 

[rIKmAN]

http://docs2.yoyogames.com/source/_...ooms/backgrounds/layer_background_sprite.html

 

[Farouk]

http://docs2.yoyogames.com/source/_...ooms/backgrounds/layer_background_sprite.html

Thank you so much, that was very helpful,
Now it worked

obviously the function i used is no longer supported in GM2

based on your link, here is what worked:

var lay_id = layer_get_id("Background");
var back_id = layer_background_get_id(lay_id);
layer_background_sprite(back_id, spr_store_background);