Email - variable text

Nikki Valentine Odens

Variable giving level text based on largest most recent gift in last 12 mos. This dynamic membership ask will need to carry-over to the donation form if at all possible. Text for non-logged in donors to display:  ASK string:  $50, $100, $150, $250,$300, $500

I don't know how to write this code and I am very lost.

If Bob's largest donation in the last 12 months was $150 than the ask string would start at $150 not at $50. If there is no record of any donation in the past 12 months than the ask string would start at $50. Please help, I do not have any experience in writing my s tags. Thank you.