Updating maximum CPC at product level in Shopping

[Rick]

Hi there!

I'm currently developing an automatic bids application which calculates maximum CPCs based on internal business rules for each product in our ecommerce.

The thing is we have around 200k products in Google Shopping, and I need to batch-update all of their maximum CPC's (manual cpc bidding) everyday.

Have researched a lot and been digging through documentation and can't find wich is the proper way to do this.

Is there any way I can just loop through my products, set their maximum CPCs, bidding type and so on and making a batch request for them to be updated?

Thank you very very much.