How to convert string value to object reference?

This is an example of my best try at the moment but it didnt woks

script.rndstringvalue.Value = "game.Workspace.rndFolder.xpart"

xstringvalue = script.rndstringvalue.Value

objeto = string.gsub(objeto, "game.","",1)

xcoord = game[objeto].Position.X

basically with the string object reference (at a StringValue) i need to get its x coord

-- I speak spanish sorry if i have any grammar error