Hi @Jesús 16,
I would recommend using Process Flow to change the FlowItem Class by triggers. To accomplish this, you will need to create a general ProcessFlow for your model. Once you have done this, add a Source which will fire based on your desired schedule, then add a Create Object.
If you open the properties for the Create Object, then click the arrow next to the Object box at the top, you'll see that you can change the FlowItem Class by a number of triggers, including by case, by percentage, etc.
Does this help answer your question? If you'd like a more specific answer, please upload an example model or data and we can provide more detailed help.
