A Wacro to move what's plugged into the "Bump" input to the "Displacement" input.

Asks for a value, which is set on the "Displacement" input of all altered materials.
N.B. value will only show as entered when the default units are Inches, as Poser applies it's conversion factor when other default units are selected.

Assign to a Wacro button to get multi-material action with Shift-Click.
Run from the File menu or Script Palette to alter all materials for currently selected figure.

Should be Mac friendly as dialog is not tkInter based.