Shooting Up (solved)

EDIT: Seems to be working now. Maybe I was putting into too severe amounts.

Thanks
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Hi there,
I am having an issue with a behavior, in that, I want the user to hold down the shoot btn, the longer one holds the shoot btn the more power is given to the velocity of the projectile. That is fine, I have that working but I also want to apply gravity to the projectile.

%this.projectile.setImpulseForcePolar(%angle, %force, true);

seems to have no results, in terms of gravity.

%this.projectile.setImpulseForcePolar(%angle, %force, false);
	%this.projectile.setConstantForceY(100);

this has unpredictable, weird results like the projectile simply disappears on release.