Scrolling LED Display - How to change the text on LED Display in the Proteus Simulation.

Hello,
I understood the simulation but I am not able to change the text in the LED . Could you please let me know how to change the text in the simulation.

Can you post the link to project? is it project or tutorial?

The LED scrolling display project.
http://www.8051projects.net/download-d253-led-scrolling-message-display-using-8051.html
thank you

Right click on the virtual terminal and turn on "Echo typed chars".
Type your message.
End your message with #;
Some browsers show #,
it should hash and a semi colon.
The micro will tell you it is processing the message.
The new message will appear on the display.
If it does not, stop then start the simulation.