Sugarquery - Dynamic Select Statement Failing

Hi team.

I am trying to build  a dynamic SugarQuery, the scenario is that I have an array of "fields" I want to use to create a dynamic select statement. For simplicity the $selectGenerator array below contains name and id.

$sugarQuery = new SugarQuery();
	$sugarQuery->from(BeanFactory::newBean($filename),array('team_security' => false));
	foreach($selectGenerator as $field)
	{
		$field = "'" . trim($field) . "'";
		print "select(array($field))" . "</br>";
		$sugarQuery->select(array($field));
	}
	$sugarQuery->select(array('billing_address_street'));
	$result = $sugarQuery->execute();

The above query only returns the "billing_address_street" field and not name and ID as expected.

If I manually updated the array to NOT use the variable and instead by hard coded (the exact same string) it works.

$sugarQuery = new SugarQuery();
	$sugarQuery->from(BeanFactory::newBean($filename),array('team_security' => false));
	foreach($selectGenerator as $field)
	{
		$field = "'" . trim($field) . "'";
		print "select(array($field))" . "</br>";
		$sugarQuery->select(array('id'));
	}
	$sugarQuery->select(array('billing_address_street'));
	$result = $sugarQuery->execute();

I've tried without the force quotes around name, and also without them, and it seems to always fail whenever I use a variable rather than hard coded. 

For instance I checked to ensure it was generating the same and my code generates the correct format which would be:

select(array('name'))
select(array('id'))

Has anyone else gotten around this or is this a bug?

Thanks,

Daniel