triggerClientServer not work

[huyjvguyen]

function openvipshop() 
if isElement(vipshop) then desroyElement(vipshop) 
    else 
            x,y= guiGetScreenSize() 
            vipshop =  guiCreateWindow(0, 0, x-500, y-500, "Shop Vip", true ) 
            guiWindowSetMovable ( vipshop, true ) 
           button.changename = guiCreateButton(0.8, 0.8, 100, 200, "Change Name", true, vipshop ) 
            showCursor(true) 
        
            
    function onClickButton() 
        triggerClientEvent("Changenamec",getElementRoot(),button.changename) 
        showCursor(true) 
        destroyElement(vipshop) 
    
    end 
    end 
    addEventHandler("onClientGUIClick", button.changename, onClickButton ) 
    end 
 bindKey ("F9", "down", openvipshop) 

[huyjvguyen]

i click button change name but the triggerClientEvent is not trigger next client Event!

[GTX]

triggerClientEvent can be used server side. You're using it in client. Either use triggerEvent or triggerServerEvent in case if you want it to send to server side.