T5 : How to solve the following problem when update the Integer or Double value In tapestry 5.0.6 ?

How to solve the following problem when update the Integer or Double value In tapestry 5.0.6 ?When I clean the value of a field whose value is 5 int example = 5;input t:type=TextField t:id=someBean value=SomeBean.example/Then press the sumbit botton . It's displaying 0 and send 0 to the

T5 : How can upate a property just in grid

Hi,I have this page that want to update a boolean field in the gird directly.But a wrong message was reported.Here is the .tml file:t:formtable t:type=grid t:source=works t:model=workBeanModel row=currentWork t:parameter name=TFCellt:checkbox value=currentWork.TF/!-- Here is the line of code