$title Reads a Table from Spreadsheet, manipulates the Data and writes back to Spreadsheet (GDXXRWExample13,SEQ=025)

$onText
This program reads data from an MS Excel file, modifies
it, writes to an GDX file and then finally writes the
modifies data to a new sheet in the MS Excel file.

This model is referenced in "Reads a table from Spreadsheet, manipulates the
Data and writes back to Spreadsheet" from the GDXXRW Documentation.
$offText

$callTool win32.msappavail Excel
$if errorlevel 1 $abort.noError "No Excel available"

$call gdxxrw test1.xlsx dSet=I rng=A2:A3 rDim=1 dSet=A rng=B1:D1 cDim=1 par=X rng=A1:D3 rDim=1 cDim=1 trace=0
$gdxIn test1.gdx

Set I(*), A(*);
$load I A

Parameter X(I,A);
$load X

display I, A, X;
$gdxIn
X(I,A) = - X(I,A);

execute_unload 'tmp.gdx', I, A, X;
execute 'gdxxrw tmp.gdx output=test1.xlsx par=X rng=EX6!A1:D3 rDim=1 cDim=1 trace=0';