Problem when filtering event from Web3

I'm new to Ethereum and encountered a problem when filtering an event and watching it in Web3.

My simple solidity contract is the following:

pragma solidity ^0.4.4; contract Test { bool approval=false; bytes32 UID; event update(bytes32 indexed _UID); event Notification (string notification); function fireEvent(bytes32 _UID) public { UID = _UID; update(UID); } function getStatus() constant returns(bool) { return approval; } function updateStatus(bool approval_UI) returns(bool) { if (approval_UI) { Notification("ACCEPTED"); approval=true; return approval; } else { Notification("REJECTED"); approval=false; return approval; } } 

}

My web3.js code which filters the event with a specific value of the _UID, then watches for the event and calls a callback function to change the contract state variable 'approval' from false (default value) to true is the following:

var account = web3.eth.accounts[0]; web3.eth.defaultAccount=account; if(web3.personal.unlockAccount(account,"1234",0)) {console.log(account);} var abi=[contract-abi-here] var address ="[contract-address-here]"; var contract = web3.eth.contract(abi).at(address); var filter = contract.update({_UID: "123"}); filter.watch(function(error, result){ if (error) { console.log(error); return; } else { contract.updateStatus(true,{from: web3.eth.accounts[0], gas:200000}); console.log('contract STATE changed!'); } }); 

However, when I connect the Solidity Remix with a Web3 provider (a private geth node) and fire the event as follows:

fireEvent("123"); 

The Web3 js code seems that never enters the else block to call the updateStatus contract function, i.e. this code snippet is NOT executed:

... else { contract.updateStatus(true,{from: web3.eth.accounts[0], gas:200000}); console.log('contract STATE changed!'); } 

and the function getStatus() returns always false (i.e. the default value)

Note though that if I directly call this function (without filtering and watching the Event)

contract.updateStatus(true,{from: web3.eth.accounts[0], gas:200000}); 

then the function getStatus() returns true, i.e. the line above is executed as per normal.

Note: after each transaction, I make sure that it is mined.

Any help would be appreciated!

Regards, Natassa