Hello..
I am working on a project where I have to send automatic mail on a button click. I have built a app using power apps where I have a mail button which allows me to trigger the automatic mail send flow. Along with this I have a sharepoint list which contains the mail template content in html format as shown below:

And my flow looks like:

In this flow, I have connected my flow to powerapps's mail button and getting the items from sharepoint list and intializing a variable that has functionallity to take input from the power apps (Ask from powerapps) and send mail to the person. But the problem that I am facing is I want to insert/use the variable from powerapps inside sharepoint list column which is "Mail Subject" (Sharepoint column). I want to insert variable data from powerapps to Mail Subject as "Brand: var_from_powerapps, Title: var_from_powerapps, Booking Number: var_from_powerapps "

