build address for using in structure

hello

I have a engineering software and linked its with MATLAB by actxserver as following command:

A=actxserver('apwn.document');
A.InitFromFile2('D:\process\calculation of pipe line\exampl\2apw.apwn');

To get data from this software, I need to generate various addresses that these addresses are for any parameters. for example in getting diameter from engineering software to MATLAB, I must use following address that '___' is various for any address and need to change always.

A.Application.Tree.FindNode('\Data\PIPES\DOWN\INPUT\FDV\GYML\MIXED\TOTAL').value;

so I used the following command to generate these:

for i=1:14;
    equip_adrs(i)=fullfile('\Data','Blocks',equip(i),'Input','MODEL_TYPE');
    full_adrs(i)=strcat('A.Application.Tree.FindNode(','''',equip_adrs(i),'''',').value');
end

since parts of addresses are various, I put parts, side by side by "fullfile" command. also "strcat" can concatenate strings (any address includes 4 parts). but I can't use strcat output because this is a string and doesn't readable for structure A (engineering software).

How can I generate an address look like above( second command)?

thank's