Change Stylesheet with Solution Model

Classic Servoy
1

Hi,

I have a already created form, which has its own style sheet and a a couple of labels with styles.

I want to change the stylesheet during run-time and assign a new styleclasses (in the new stylesheet) to the two existing labels.
My code is as follows,

var _success = history.removeForm('frm_myform);
	if(_success) {			
		var _form = solutionModel.getForm('frm_myform');
		_form.styleName = 'new_style';			
		
		var _label1 = _form.getLabel('lbl_1');
		_label1.styleClass = 'lbl_logo_1';	
		
		var _label2 = _form.getLabel('lbl_2');
		_label2.styleClass = 'lbl_logo_2';
}

in the new stylesheet (new_style), I have the following styles,

label.lbl_logo_1
{
	background-image: media:///logo1.png;
	background-color: black;
	width: 2000;
}
label.lbl_logo_2
{
	background-image: media:///logo2.png;
	background-color: black;
	width: 100;
}

However, the result I get is that the labels show nothing. I can see a white space where the labels were.

Any help is much appreciated.

Regards,
Hareendra