Hi.

I tried to follow the tutorial to read the data from excel. I have manually inserted the data for the sets of the index c,t and r in AIMMS. Then, I must set a 3-dimensional parameter, e.g. waste(c,t,r) as shown in the picture below. I wish to insert the data for the parameter by using the axll function in AIMMS.

 I put the excel sheet in the AMMS data folder. I tried using this coding:

WorkBookName := "roomWaste.xlsx";

if axll::WorkBookIsOpen(WorkBookName) then
         axll::SelectWorkBook(WorkBookName);
else
         axll::OpenWorkBook(WorkBookName);
endif;

axll::SelectSheet(SheetName : "Waste");

axll::ReadTable(
    IdentifierReference : waste(c,t,r),
    RowHeaderRange      : "A5:A2890",
    ColumnHeaderRange   : "B2:KLH3",
    DataRange           : "B5:KLH2890");

 axll::CloseWorkBook(WorkBookName);
 

However, when i tried to run the procedure, there is warning/error as shown below: 

Can anyone help me with this problem? Thank you in advance!