How to click on specified image by using "Click image"

Hi, any one know how to click specified image in a file.i am passing image variable to click image activity but it is not clicking on certain image what i passed as variable.

please find extact image tag information by using UiExplorer. This will help to highlight your image.
Once you get right selector then you are good to click.

I am not getting you.if you any example please attach it.