particle genertaor rotation

I have created an particle emitter which i rotate towards the player when a key is pressed using

Setangletoward(player.x,player.y) it works perfectly but now when i try to direct the particle emitter away from the player using Setangletoward(-player.x,-player.y) it wont work...! what am i doing wrong..how do i fix this..

<img src="http://pasteboard.co/szZvt5h.png" border="0" />

I have created an particle emitter which i rotate towards the player when a key is pressed using

Setangletoward(player.x,player.y) it works perfectly but now when i try to direct the particle emitter away from the player using Setangletoward(-player.x,-player.y) it wont work...! what am i doing wrong..how do i fix this..

<img src="http://pasteboard.co/szZvt5h.png" border="0" />

Try

Setangletoward(player.X,player.Y) - 180

Thank you for the quick reply but I tried that.....

even tried -90 & -360 for good measure... it wont work..

I m not being allowed to post URL / Images so m not able to show u screen grabs..