Filter for episode duration

I am very bothered by my subscriptions by the presence of small episodes which do not interest me and which overload my inbox.
I tried to create a custom apk with the code and Android Studio but I’m really overwhelmed by the complexity of the code, I can’t do it.
Can you at least help me to modify the code so that episodes less than 10 minutes do not appear, where I must modify to ensure that my inbox does not contain episodes less than this duration. THANKS