Wikitude

Change of image drawable in the poi nearest to the user

 

Hi,

I'm a student and also new in wikitude. I read all about it and got interested. I dont know if this one is already asked in this forum but i would like to asked on how can i change the image of an poi nearest to the user??? Let's say that i set the "nearest distance" by 4m(for example) so whenever the user go to the pois(15 pois for example) and if it happens that the distance between one of the poi and the user is 4m the image of the poi will be change.

 

i put the condition in this part but nothing's change.