knockout.js - Unable to update observable value in subscribe method -


i have subscribe function fires when dropdown value changes. want update observable value inside subscribe function. probelm when control leaves subscribe function observable value got null or empty.

self.selectedsubaccount.subscribe(function (newvalue) {  //alert("the selected account code:" + newvalue);  var likecode = newvalue.substring(0, 2);  var acctype = "control";  self.account_code = genrateaccountcode(self.subaccounts(), likecode, acctype); });

assuming self.account_code observable, update so:

self.account_code(genrateaccountcode(self.subaccounts(), likecode, acctype));

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