Is it possible to change the direction of a slide transition (Wipe) based on a variable?

A have a slide transition using a Wipe (wipe from right), which is great when the user clicks the Forward arrow to arrive at this slide. However, if they advance beyond this slide and then click the Back arrow, the Wipe transition is still 'wipe from right' which looks unnatural.  Does anyone know if a transition can be set such that (for example) a wipe would come in from right when using a forward arrow button but would wipe from left if using the Back arrow button?

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