This should work
Code: ags
function on_key_press(eKeyCode keycode)
{
if (keycode == eKeyPlus)
{
cEgo.SetWalkSpeed(cEgo.WalkSpeedX + 1, cEgo.WalkSpeedY + 1);
}
if (keycode == eKeyHyphen)
{
cEgo.SetWalkSpeed(cEgo.WalkSpeedX - 1, cEgo.WalkSpeedY -1);
}
}