JSON string value in Merchant Defined SIM Field?

[coppercup]

I'm submitting a JSON string in a merchant defined field to the SIM hosted payment form, however the relay response only contains the opening curly bracket of the original string, "{", and the rest of the string is missing in the response.

Is it not possible to submit a JSON string as a merchant defined field value?

Thanks, Fritz

[coppercup · Accepted solution]

I have come up with an easy workaround, which is to base64 encode the json string before submission and decode it after receiving it from the relay response.