I am trying to set up an MX record with the following value, and you DNS record setup for MX doesn't allow me to do this. Google is wanting me to activate my MX records by putting this into the value field. Is there anyway you can help me?

Link to Google on doing this.
https://admin.google.com/u/0/ac/signup/setup/v2/verify/domain_mx

Value for MX field.
pw5lipla2lgwhye7mqny5hqe5qsecmmtalrwsfqr3j72yfrwrnma.mx-verification.google.com.

Please advise.

Screenshot attached.

The google value has to go into the Note Name field, and the host is your domain name, which the MX entry refers to (no Google name goes in the host field) ;)