I think there is a confusion in this part of the code, please let me show you with an example.

$ ucoin cget 1,1,1,10
D10F0A8AF11EE0AAA616A0C169F048C825500A07:142:143:144:130

The command line in this example takes as parameter several coin values and returns the original issuer and coin numbers and as you can see all the data are separated by a colon.