How do I create a building in clicked sprite?

Hi, i have the following problem:

I have 3 layers

a/layer island with 6 sprites of grass (all the same with diffirent instance var) and i want to build a building when you click on any of them (and open the building layer like pop-up)

b/layer background

c/layer buildings that player clicks on 2 type of buildings and suppose create one of them at the last potition of the grass clicked

i set position of x and y at grass and i declare at what layer and x,y co ordinates the new building must be created but the building always build in the same position (1st grass sprite)

i click the grass sprite then layer opens to choose building to create ,i click on building and builds at same grass sprite all time

how can i make the actions so the new building creates in the last position clicked? in any grass sprite that i choose and click?

ty

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Thank you very much. I havent realize that so much work needed to make this. Now i can see the logic.

Im searching it and the spawn object maybe it solve temporarilly the problem but for sure it isnt the correct method.

The correct method should be:

a/click on grass (any) and somehow his x,y coordinates saved-stored (temporarilly) somewhere, then

b/i click at the pop up object i want to create and give order to create it at those specific x,y coordinates of grass.

For sure must be a way to code it . Why to make an intermidiate object and then replace it?

Wherever i click a sprite, the coordinates must be stored and then applied to the new object that i want to create so it could be positioned to the specific place

Any ideas?

ty