Cannot find infoobject to enhance the cube

Hi All,

I have a infoobject dealer of which 0tel_number is an attribute, I have the 0tel number in the datasource(flat file) but it is not in the cube, Dealer is in the cube as well as datasource, I was trying to add 0tel_number to the cube but I am not able to find in the Template, do you think its because its attribute only???