How to create a new channel in the data portal of type String/Text?

I was looking for a way to store the names of the channels coming from my database --> to the channel, but its not working.
I tried something like this:

set oChnXname = data.Root.ChannelGroups("Exp Channel group").Channels.Add("ChnXname",Datatypestring)

oChnXname(i)=(RS.fields("xchannel"))

Any help is highly appreciated

Thanks in Advance.