URL (more than 255 characharistics) open as external window

HI Experts,

For open URL as externla window. I am using CALL METHOD lo_window_manager->create_external_window

here URL passing parameter is string, it allows only 255 chracteristics.

But In my scenario i need to pass more than 255 to 500 characteristics

So any one can sugget how to pass more than 255 characteristics URL?

Regards,

BBC