Search for line with keyword, and add to property

[trungng2006]

For example if my file contain:

Lorem Ipsum is simply dummy text of the printing and typesetting industry.  *FMkey*

Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, 

when an unknown printer took a galley of type and scrambled it to make a type specimen book.

 It has survived not only five centuries, but also the leap into electronic typesetting, r*FMkey*

emaining essentially unchanged. It was popularised in the 1960s with the rele

ase of Letraset sheets containing Lorem Ipsum passages, *FMkey*

and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

When i trigger the command, it will auto add all the line with FMkey to a designated property (ex: KEY)

I think the property name and the key can be define in setting.