slide controls use single finger gesture for sliding, two finger gestures in filemaker go changes records so that's most likely what you are seeing.
Is the slide control not working with a single finger swipe?
Yes, The Slide Control works, but the thing is, I noticed when I select another area in the screen, outside
de Slide Control box, the whole screen is moving, it should be locked right ?
It sounds like your layout size is bigger than the actual screen size of the iPhone... For the layout to not move around on finger swipes then it should fit the screen dimensions... Also a good idea to lock zoom level to 100%....
Yes, that was the problem.
The Layout Size was too big. I resized to the size, which supposed to be for an Iphone, and it works now.