I have a section Template'Section_library',in 'Section_library' i have a field 'first-name' who recuperate the value field from another section in my form so i used this expression
xxf:component-context()/root()/form/Section_TWO/mycontrol.
this expression not worked totally,the recuperation is done when i try to write in this field 'first-name'. i want a solution that automatically recuperate the value within any interaction of user.
I find this issue #3008 but i didn't understand it.
As of 2016.2, there is no reliable and supported way for code inside a section template to access information about the form it is used in. This is by design, but there are reasonable use cases that call for a section template being able to access things from the "outer form", and you're correct pointing to RFE 3008. For now I'd recommend you follow this issue.