I need to open a matlab file in which contains multiple mat varibles in different data type such as character and arrays of double. I used Insert>Data>FileInput then select a matlab file and it displays an error msg "the MATLAB file could not be opened for reading..." If I delete the character mat variable in the mat file, then it loads ok but only displays 1 set of mat data (provided my mat file now contains multiple array of double data in different variable name.) In addition, I tried Insert>Components>Data import Wizard>...then select a matlab file and it seems like I got the same problem. Does anyone here happens to know how to achieve this? I heard some thing about SDK for building custom components for integrating with third-party applications inside mathcad but not sure how it does any help in this case? and if so where I can get this SDK and is there any quick tutorial link for it? Thanks in advance.