How can I get multiple Networks

Hello i have onboard a view Customer with Meraki in Postman.
I have create different Enviorment for each Customer include baseUrl, APIKey, and OrganizationID.He The Rquest for Organization, and Networks are done on Collection based, this is workin fine.
But when i come to the Point to list the Devices in the Nework i can ongly select one because get the Issue that the variables "NetworkID can be add only onces, and the CUstomer have multiple NetworkId, how can I fix that.
Best regards

I don’t think this is related to Postman.

Ask Meraki about the error.