I had originally set this but it gave me an error

<MovementHotkey up,down,left,right>
<If ActiveWinIs wow1><SendLabel w2><Key %Trigger%>
<Else If ActiveWinIs wow2> <SendLabel w1><Key %Trigger%>
<Else><SendFocusWin><Key %trigger%>

I'll try yours in a min or so and report if it works.thanks