Hi @Add_Bddd ,
We would first have to get the content’s in into a Byte Array format.
So we use :
InputByteArrayData = System.Text.Encoding.UTF8.GetBytes(yourStringVar)
base64Str = System.Convert.ToBase64String(byteArrayData)
To Convert Back to String :
OutputByteArrayData = System.Convert.FromBase64String(base64Str)
yourStringVar = System.Text.Encoding.UTF8.GetString(OutputByteArrayData)
The above can be done using an Assign Activity.