Updating the property value in custom widget

Hi,

I have created a custom widget for TWX using eclipse. i have created a property in ide.js file and in runtime.js i have function which gives a base64 value of an image as output. how can i update the property value with this variable value.

I have tried using this.setProperty() to update the property value, and the updated property value is displaying in console with this line this.getProperty(propertyname) after this.setProperty() line, but not changing if i bound the property to some label widget to check the change.