Filter order not respected

Problem with textformat filter order.

I want to use the "PHP-Evaluator" filter with the "GMap Macro expander".

The PHP-code writes the macro for "GMap Macro expander".
It does not work because the "GMap Macro expander" expands only texts which are already in the source-text of the PHP-code.
The order of the filter is set correct, but it is not respected.

See attached screenshots.

When I write the GMap-Macro as text in the code, it works:
echo '
[gmap markers=sv restoV::47.5001,8.73125| markers=sv restoF::46.2687,8.68466| markers=sv restoF::47.4842,7.61787| markers=sv restoV::46.1704,8.79327| markers=sv restoV::47.3764,8.54412| zoom=8 |center=46.7828958,8.280945 |width=100% |height=500px |control=Small |type=Map]';

When I make the GMap-Macro with PHP-code, it doesn't work:
$m = '[gmap '.$setmarkers.'zoom=8 |center=46.7828958,8.280945 |width=100% |height=500px |control=Small |type=Map]';
echo $m;