Admob on iOS Crashed on Banner

Hi,

My Admob works earlier this year. The new plugin requires admob-id in plist (build.settings). Now, I notice that the Admob on iOS 13.6.1 (tested on iPhone & iPad), crashed when the y-value is a number. It works if it is a string (e.g. top, bottom)

Test function :

    local function testAdmobYPosition() 

	local admob = require( "plugin.admob" )
	 
	-- AdMob listener function
	local function adListener( event )

		print( event.phase )
		if ( event.phase == "init" ) then  -- Successful initialization
			
			
			admob.load( "banner", {adUnitId  = "ca-app-pub-4762604025003370/xxx"} )
			
			

		elseif (event.phase == "loaded") then
		
			-- This will FAIL / CRASH
			admob.show( "banner", { y = 50 } )
			
			-- These below will PASS
			-- admob.show( "banner", { y = "top" } )
			-- admob.show( "banner" )
			
			
		end
	end
	 
	-- Initialize the AdMob plugin
	admob.init( adListener, { appId="ca-app-pub-4762604025003370~xxx" , testMode  = true } )


end

I opened an issue here : https://github.com/coronalabs/com.coronalabs-plugin.admob/issues/3

Is anyone facing this problem with iOS banner ?