I am new to Qlik Sense and I was having some problem when trying to apply selections with a custom Qlik Sense extension. I have tried from this tutorial. Unfortunately, I have no idea why there is nothing shown, not even error message.
I managed to console log out the things that I selected but Qlik Sense never applies the selections.
The easiest way to make a selection
var app = qlik.currApp();
app.field( "DimensionName" ).selectMatch("Value", false );
You can use also selectValues for multiple values :
Integers :
app.field(fld).selectValues([5,10], true, true);
Strings :
app.field(fld).selectValues(["Andersson"], true, true);