Issue with Template Id

[roopeshkurian]

Hello

I am trying to run a campaign. For that I am setting a template to campaign . But my campaign id is bigger than normal integer. So its giving

System.OverflowException: Value was either too large or too small for an Int16.Value was either too large or too small for an Int16.

           MailChimp.Net.MailChimpManager mns = new MailChimpManager();
            MailChimp.Net.Models.Campaign  cmp = await mns.Campaigns.GetAsync(model.CampaignId );
            cmp.Settings.TemplateId = Convert.ToInt16(model.TemplateId); //128697

Can you please check it for me?
Thanks and Regards
Roopesh