unable to store.....when datatype=float[8] Main

Hi, so I am a newbie with simulation on maplesim. I've made a simulation of the lower part of a humanoid robot and I attempt to input angles to the joints from an excel file.

However, after adding my file .xls to the data set and linking it to a time lookup table, I get this error:

Havent installed any add-ins, I am working with excel 2007, Maplesim 6.4 and Maple 18.

Any insight on the problem would be of great help.

Thank you