How do I get a path in specific cases grid in my game?

Hello everyone !

I'm new in Construct 3, I try to make grid RTS game like Fire Emblem Heroes.

When I touch my player I create moves boxes (blue) and when I touch one of them, my player move to box I touched with FindingPath. But, when I touch the top box (upper red box/wall) my player follow path but he walk into grey boxes. He don't he does not stay on blue boxes.

How I can tell to findpath he not to go past the blue boxes(grid), he can't jump over red box/wall ?

Thanks for your answers and sorry for my bad english ;)

There are several examples on grid pathfinding in forum try do a search.

My example related to your question:

dropbox.com/s/fumc7ctko35r68r/tap%20path.capx

and

dropbox.com/s/mcd4qp16mp07lce/path_orient3.capx