English Amiga Board - Using UaeLib to enable/disable warp mode

I want to use UaeLib to control the awesome warp mode from code. However, I can't get it to explicitly Enable or Disable from code, I can only toggle it. Does someone know why the my commands UaeCommand 'AKS_WARP 1' and UaeCommand 'AKS_WARP -1' (with the macro below) doesn't explicitly set or clear the warp mode?
I'm using WinUAE 5.0.0

Code:

UaeCommand: macro                                        

                move.l        a0,-(a7)

                pea                0.w

                move.l        a0, -(sp)

                pea                .cmdend\@-.cmd\@

                pea                .cmd\@(pc)

                pea                -1.w

                pea                82.w

                jsr                $f0ff60

                lea                24(sp), sp

                move.l        (a7)+,a0

                bra                .done\@

.cmd\@:

                dc.b        \1

                dc.b        0

.cmdend\@:

                even

.done\@:

        endm



        UaeCommand 'AKS_WARP 1'

        UaeCommand 'AKS_WARP -1'