How to build custom xpath

[jay yeole]

Hi,

I need support for building custom xpath by using some fixed property in control like data-layoutkey or data-formtemplatepartid
E.g. -
//*[@data-layoutkey='Persons Prefix Data Field']
//*[@data-formtemplatepartid='28986']

As of now i do it manually, but i want if there is any way so i can configure these (data-layoutkey, data-formtemplatepartid) property in firepath.
So that i do not have to create such Custom Firepath manually.

Thanks,
Jai

[jay yeole]

Also, Please suggest any other good tool if you know to build such a custom xpath.