func GenerateHeaderXML(credentials model.PayliveCredentials) (headerXML string) { var xml = "<soapenv:Header>" xml += "<pay:PaymentHeader>" xml += "<pay:APIVersion>1.3</pay:APIVersion>" xml += "<pay:MerchantKey>" + credentials.MerchantKey() + "</pay:MerchantKey>" xml += "<pay:MerchantEmail>" + credentials.MerchantEmail() + "</pay:MerchantEmail>" xml += "<pay:SvcType>C2B</pay:SvcType>" xml += "<pay:UseIntMode>0</pay:UseIntMode>" xml += "</pay:PaymentHeader>" xml += "</soapenv:Header>" return xml }