TimeGuiSetRightC = { } 
  
function guiMoveRightToCenter(gui) 
if getElementData(gui,"HelhGui") == false then 
    setElementData(gui,"HelhGui",true) 
    local s1,s2=guiGetScreenSize() 
    local w1,w2=guiGetSize(gui,false) 
    local x,y = (s1-w1)/2,(s2-w2)/2 
    guiSetPosition(gui,-x,y,false)  
  
TimeGuiSetRightC[gui] = setTimer(guiMoveRightToCenter,50,0,gui) 
end 
    local a,b=guiGetScreenSize() 
    local w1,w2=guiGetSize(gui,false) 
    local x,y = (a-w1)/2,(b-w2)/2 
    local x1,y1 = guiGetPosition ( gui, false) 
if (x1 >= x) then 
    killTimer(TimeGuiSetRightC[gui]) 
    setElementData(gui,"HelhGui",false) 
    else 
    guiSetPosition(gui,x1+10,y,false) 
end 
end 
	By : Booo