How can i create a variable with a xlsx file so it can be read in a lookup table block?

Hi, 

I am trying to convert a matlab-simulink projeto to activate but i dont know how i can create a variable with a xlsx file so it can be easly edited and read in a lookup table block. In matlab there´s the function xlsread() witch does that, bue i dont know how can i do it in activate. Can you help me?

Thank you, 

Tomás Glória.