How do I adjust a GUITextures width, from the left?

So I have been googling everywhere, and have found nothing.

My problem is that when I attack my enemy, its health bar is shrinking from right to left.

The reason, I think is this:

Width Right-most pixel position of the texture.

I want it’s width to go from the left to right, because of its position on screen.

Is there no way of doing this?

Thanks in advance.

Reducing pixelInset.width makes the texture to shrink from right to left, as you said. To make it shrink from left to right, use a negative pixelInset.width - but remember that in this case pixelInset.x will set the right corner, instead of the left:

  guiTexture.pixelInset.width = -maxWidth*health/100;