ST<{"cmd_code":"set_visible","type":"widget","widget":"AlertText","visible":false}>ET
ST<{"cmd_code":"set_font_size","type":"widget","widget":"AlertText","state":"normal","size":32}>ET
ST<{"cmd_code":"set_color","type":"widget","widget":"AlertText","color_object":"bg_color", "color":00000000}>ET
There was a partial problem with your command, it has been modified for you, please test it with the above command.
If there are still problems please communicate with me.