Her's an example to get you started. Put the two attachments on your desktop, then run the code below. To do this, do 'File > New > New Script', paste the JSL into the window, then 'Edit > Run Script'.
NamesDefaultToHere(1);
// Make a DOE object
doe = DOE(Custom Design);
// Read in factors from Excel
fTable = Open("$DESKTOP/Factors.xlsx");
// Set 'Design Role' column property for all factors
for(c=1, c<=NCol(fTable), c++, Column(fTable, c) << setProperty("Design Role", "Continuous"));
doe << LoadFactors;
Close(fTable, NoSave);
// Read in responses from Excel
rTable = Open("$DESKTOP/Responses.xlsx");
doe << LoadResponses;
Close(rTable, NoSave);