Field code Number for Zapier & Gmail

I’m using Airtable to send personalised emails trough gmail with zapier.

I used to fill one field with all the text of the email formatted in html. I was getting the field number from zapier options. It was looking like this : {{71809321__Name}}

Zapier no longer give the option to get the number of a field, but only automated picking of a field.

Do someone know who to get this code number ? I’m a newbie with coding. Thanks for your help.

My html email was looking like this :

Hello {{71809321__Name}},

Here is the link to yours documents :

Can you tell me if the option {{71809321__Option Choice}} is fine with you ?

All the best,