Zoho Flow: Calendly to Zoho CRM (custom questions in calendly)

Zoho Flow: Calendly to Zoho CRM (custom questions in calendly)

Hi,
I set up a flow where new bookings are transfered to Zoho CRM. Works fine for now (new Appointees are added as a Lead, the appointment is added as an activity. Existing contacts are recognized by email and an activity is added.)
Problem:
I have several custom questions in my calendly booking. One of them is "Mobile number" and some others.
Zoho flow pulls that data as "Questions and answers" or "Questions as responses".
Unfortunately not the answer alone is pulled but the whole question section.
I want to save the mobile number to the according field in Zoho CRM. How can I do that?