Configure BPM Approval Workflow based on Contract Amount

Hello,

I'm creating Buy-Intent contracts that allow lines and with the lines amount, we have the total contract amount.

I'm trying to configure the approval workflow via BPM (Task: ContractsApproval), based on the contract amount but the only option I can see is the "Agreed Amount" which one should I choose to use the Contract Amount as a condition?

Thank you,

Jess