u use a dxDraw interface right?
then just create a guiEdit make alpha 0 and draw it with dxDrawText
like this:
text = guiCreateEdit(0.48, 0.47, 0.12, 0.02, "", true)
setElementAlpha(text,0)
dxDrawText( guiGetText(text) ,0.48, 0.47, 0.12, 0.02, tocolor(150, 150, 150,250), 1, segoeui, 'left', 'center')
but u need 2 eventHandlers for that - need to render (onClientRender) dxDraw and do not need to render guiCreateEdit
So create a Event and trigger it once, after remove EventHandler (onClientRender) u need to destroy guiElement