How can I add initial text in InputField?

[tyhbj]

I already knew how to set default video in Usharp video.But I need to preset some text in the input box,cause I need to have the video cloud resolution prefix to play bilibili videos in VRC.
For example,when i play a bilibili video such as"https://www.bilibili.com/video/BV1btHZexEXw",i should add "https://biliplayer.91vrchat.com/player/?url=", combine into "https://biliplayer.91vrchat.com/player/?url=https://www.bilibili.com/video/BV1btHZexEXw"
I want just paste only one url to change video in my world,help me please .

[jacklul]

Udon is not allowed to modify user's URL input for security reasons.

[tyhbj]

Udon is not allowed to modify user's URL input for security reasons.

Thank you for your answer. As far as I know, the input of this world is preset with text."https://vrchat.com/home/world/wrld_29e92dbd-b1fa-479a-a53d-1f312cb54570/info", I don't know if it depends on udon.

[jacklul]

You can set field's default value in Unity but that's it, the user might delete the whole contents instead of pasting after it.
You can also use Udon to reset the field to that value after each URL load (OnUSharpVideoLoadStart callback).