Shopify Flow - Split payment values

Hi,

I am looking to save split payment values to a metafield for use in a report. I can see that messages contain an amount and percentage, does anyone know what this variable called to pull into a metafield?

image

does this message and account texts in your order , if so you can use Shopify flow to do this but need to use Grahphql api

Its amount of transactions of order