Sultana green bean seed question

I grew some sulatana green climbing beans last year and they were fantastic.  I saved seed from them and was hoping to plant them this year.  I have read a bit on this site about heirloom seeds and now I am worried that the seed will not come true or will be inferior.  Does anyone know if I sow this seed whether I will get the same plant I grew it from or do you need to buy heirloom seeds???!! I am a bit confused about it all

Yours doesn't appear to be an  F1 hybrid variety so should produce identical plants the next year assuming they have not beencross pollinated.
French beans are usually self pollinating (they do not cross  easily) but you can't be 100% sure.


Saying that I'm still growing saved beans and peas