Controling 2 Markers on Slider

[educhene]

I have a slider with two markers (see file attached).
This slider is used to select an area of datas to analyse.
The pb is that I don't know how to control the slider so that the operator can't move the first marker position after the second marker (and second marker must never been lower than first).

Thanks.

[vicky]

HI,
i have just tried to modify it for you so that SL1 does not cross SL2 see if it helps

[educhene]

Hi,

thanks for your response;

at the end, it is the result I would have : but the Vi does not resolve entirely the pb : you can always move the first marker after the second (IHM and see the red color from beginning of the slider to the second marker) , even if after, when the operator release the mouse, position of the two cursors are same.

I don't know if there is a solution to prevent the operator to move the first cursor after the second (and second before first of course) by IHM ????