Creating cell within structure

I am trying to create a cell array within a structure.

I am trying the syntax (as per the help struct)

..................................................

% get the values to place into structure from excel file

[num, str]=xlsread('InputFile.xlsx','WeightedLookUp');

% Now create the structure from the files

B= struct(str{1,1},[num(:,1)],str{1,2},{str(2:end,2)},...

    str{1,3},[num(:,3)],str{1,4},[num(:,4)]);

.........................................

But I still get B =

     order: [9x1 double]
    tissue: {5x1 cell}
my *desired* result(obtained by manually placing things in structure) is 
B = 

         order: {9x1 cell}
       tissue: {9x1 cell}

If anyone could please help me resolve this,it will be very helpful. Thanks

[Azzi Abdelmalek]

Can you give more details about str and num?

[Samadrita]

num has values created by reading xlsread and str has the string vales from the same sheet.

whos num

Name      Size            Bytes  Class     Attributes

num       9x17             1224  double

and

 Name       Size            Bytes  Class    Attributes

str       10x17            19360  cell