Assigning String value to a rawstring variable.

Hi ,

I am trying to consume an external webservice in SAP CRM. I created the proxy in the CRM using the wsdl file which has created one parameter called content with the data type as RAWSTRING. 

I actually want to pass a base64 encoded string value to this parameter but due to data type mismatch the encoded string value is not  getting assigned to this Rawstring variable. Also I am unable to define any variable of type rawstring as its not permitted.

I have option of converting the value to xstring and assign it to Rawstring but that webservice needs the value as base64 encoded string only. Can anyone help me how to handle this.

Regards,

Sudharani