Error in the 'Collect contact info' step of the 'Build a simple flow' module. (link: https://trailhead.salesforce.com/content/learn/projects/build-a-simple-flow/collect-contact-info-from-your-user)

I have created a variable named 'contact' with the type record but when trying to use that for assigning values, I'm facing a problem .

When I try to assign {contact.FirstName} here as mentioned, I get the following error...

 I can't figure out what's the problem here. Can someone help please?