disable Insert/edit code sample in Course custom fields

disable Insert/edit code sample in Course custom fields

adam dev -
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Hello everybody, Hope everything is great at yours end.

I need assistance that I cannot write the code under default Insert/edit code sample in the tiny text editor for course custom field. This is because its disable or inactive. Please can somebody let me know how can I make it active to write down the code so it can show in every else course in which the course custom field is not set.

Thanks in advance 

Regards.
Adam

附件 Screenshot 2024-04-18 112629.png