Mapping more than two currencies with WP All Import

Hi. I’m using the Curcy Pro plugin and importing my products with WP All Import Pro. My site has three currencies – GBP as the default currency, plus USD and EUR.

I found discussion online about using WP All Import and have used this suggested method successfully to map a custom fiield – the last comment in this thread by user morroni: https://wordpress.org/support/topic/bulk-editing-woocommerce-csv-import-for-euro-currency/

I am using the custom fiield name: _regular_price_wmcp
I am using the value: [encode_currency(“USD”,{productsupply[1]/supplydetail[1]/price[2]/j151[1]})]

This works to add USD as a currency. I’m wondering how I amend this value to include mapping in addition for EUR too? I can see in the database that the _regular_price_wmcp value is stored like this: {“USD”:”129.95″,”EUR”:”109.95″} so this is what I’m trying to achieve.

Is there a way I can do this?

Thanks
Martin