How to draw using opengl after renderworld?

Hi I'm trying to draw something after using the renderworld using opengl and nothing is shown....

Function RenderGrid(l:Byte,s:Int)
	glColor3f(0.5,0.5,0.5)
	glBegin(GL_TRIANGLE_STRIP)
	
	
	For Local i:Int = -l/2 To l/2
		glVertex2f(i,-1)
		glVertex2f(i,1)
		
		glVertex2f(-1,l)
		glVertex2f(1,l)
	
	Next
	glEnd()
End Function

here is the function that I call after RenderWorld()
somehow nothing shows up.. :(
Can someone help me?

You Flip after all that? (not right after renderworld!)

RenderWorld()
rendergrid(4,3)
Flip

This is how my code looks so I guess its ok.
But still the grid refuzes to show up.

Try it this way:

RenderWorld()
Camera.Update()
renderGrid(4,3)
Flip

This will restore the Marices after the renderworld command.
I dont know if this is working but this could be the reason.

Uhuuu 10X man ;)