how to ADD matlab function to the simulink block

[ashokone]

hi i have created one matlab function, how to add this function to the simulink block. block which has NO INPUT and OUTPUT.. only block.. Has you observed in blue box type.. plz help how to create this blue box in simulink and adding matlab function to block

 

[pankaj jha]

hi
if i use a mux block to group several signals in the same line, which is also the input of the matlab function block, will both the inputs be available to the matlab function block simultaneously?