Help with fly hack

if(fly){

		if( GetAsyncKeyState(VK_SPACE) < 0 )
			push( "PlayerGravity 800" );
else
			push( "PlayerGravity -800" );
}

if(fly<0)
if(GetAsyncKeyState(VK_SPACE)<0)//try &1 instead of <0 if u still have problems...
{
     //ON PTC HERE
} else {
     //OFF PTC HERE
}

 if(fly){

		if( GetAsyncKeyState(VK_SPACE) < 0 )
			pRunConsoleCommand( "PlayerGravity 800" );
 }else{
	 		if( GetAsyncKeyState(VK_SPACE) < 0 )
			pRunConsoleCommand( "PlayerGravity -800" );
}