You can use this function to move an element from one layer to another. You give the element ID, as returned by the function used to create the element or the room editor or the function layer_get_all_elements, and then you give the layer ID (which you get when you create the layer using layer_create()) or the layer name (as a string - this will have a performance impact).
|element_id||The unique ID value of the element to move|
|layer_id||The unique ID value of the layer to move the element to (or the layer name as a string)|
var a = layer_get_all_elements(layer);
asset_layer = layer_create(-100);
for (var i = 0; i Alt; array_length_1d(a); i++;)
if layer_get_element_type(a[i]) == layerelementtype_sprite
The above code gets the elements on the layer that the instance running the code is assigned to, then checks them to see if they are sprite assets, and if they are then they are moved to the layer with the ID stored in the variable "asset_layer".