Webhooks

[Toine59]

Good morning,

I'm using your Webhooks project.
Sheets/Webhooks : https://github.com/choraria/google-apps-script/tree/master/Sheets/Webhooks
I really like it but I have a special request about it:
During the first acquisition of data from an API, everything goes well and the columns are created with a particular header. The following acquisitions are based on the first but no new column can be created automatically. I can get around this by creating the new column myself.
Is there a line of code to modify so that each new column is created as during the first acquisition?
Thank you so much,

Sorry for my English, I'm French...

Anthony