give action to client buttons

[MamadHastam]

there is one thing i cant understand
how can i give actions to the buttons in client
for example when i write :
 

addEventHandler ("onClientClick", root, function(btn, state)
	if btn ~= "left" or state ~= "down" then return end
	
	if isMouseInPosition (xx*594, yy*396, xx*235, yy*300) then
		-- click 1-st button
	elseif isMouseInPosition (xx*840, yy*396, xx*235, yy*300) then
		-- click 2-nd button
	end
end)

function isMouseInPosition ( x, y, width, height )
	if ( not isCursorShowing( ) ) then
		return false
	end
	local sx, sy = guiGetScreenSize ( )
	local cx, cy = getCursorPosition ( )
	local cx, cy = ( cx * sx ), ( cy * sy )
	
	return ( ( cx >= x and cx <= x + width ) and ( cy >= y and cy <= y + height ) )
end

how give button 1 an action to do somthing
please explain it to me

[Trust aka Tiffergan]

To give the first button an action to do something, you can simply add the code that you want to execute when the button is clicked within the block of the first if statement

For example, if you want the first button to output a message to the chat when it is clicked, you can do something like this:

 

addEventHandler ("onClientClick", root, function(btn, state)
	if btn ~= "left" or state ~= "down" then return end
	
	if isMouseInPosition (xx*594, yy*396, xx*235, yy*300) then
		-- click 1-st button
		outputChatBox("Button 1 was clicked!")
	elseif isMouseInPosition (xx*840, yy*396, xx*235, yy*300) then
		-- click 2-nd button
	end
end)

You can also execute other functions or trigger other events when the button is clicked. Just replace the outputChatBox line with the code that you want to execute.