Modify query param in pre-request script

[mbuecher]

What actually worked for me all the time was:

//console.log("----- Encode query string");
//console.log("Input: " + pm.request.url.query.toString());
var querycount = pm.request.url.query.count();
for(let i = 0; i < querycount; i++) {
  //console.log(i + "/" + pm.request.url.query.idx(i).key + ": " + encodeURIComponent(pm.request.url.query.idx(i).value));
  pm.request.url.query.idx(i).value = encodeURIComponent(pm.request.url.query.idx(i).value);
}
//console.log("Output: " + pm.request.url.query.toString());