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NullPointerException : public class MytaskPropertySection extends DefaultPropertySection [message #1754455]

Fri, 17 February 2017 23:13

im hello world

Messages: 44
Registered: February 2017

Member

i'm in a dilemma and i need who enlighten me! help PLEASE!

the problem is in the class

public class  MytaskPropertySection extends DefaultPropertySection

where i have the method

public void createBindings(EObject be) {  [...]

when i press my new custom task property tab i have a Null pointer exception error which points on this "bindList(taskConfig, ModelPackage.eINSTANCE.getTaskConfig_Parameters());"
I did the same example available on the tutorials.. just in the property tab extension point i put in the class field the latter class "org.eclipse.bpmn2.modeler.wiki.MyTaskPropertySection"
to Display the Parameters list in TaskConfig

i don't understand what's the problem!
any one have an idea about this error?
thank you for your help.

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