Adobe sign agreement in IFRAME - locale parameter

Hi,

We are trying to embed Adobe sign agreement in a IFRAME via the /agreements/{agreementId}/signingUrls api. We get the esignUrl and are able to load it into the IFRAME which is great.

But when we try to set the locale by passing additional paramter &locale=fr_FR it doesn't seem to work. https://secure.na1.echosign.com/public/apiesign?pid={pid}&client_id={clientId}

The IFRAME always loads with en_US.

Could you assist us on this ?

Thanks,

Pallav Kumaria