Hi @Xnolbay123,
Do you have a SharePoint custom form in your canvas app?
Could you please tell me if you want to submit form to your SP list? Since you have created such many controls, I will provide a solution as well.
Actually, I don't think a custom form is a good choice to save data back to SP list. Since you have created such many controls, I will provide a solution as well.
1). Add a "+" icon to change the form into a new form when you want to create a new record by setting the OnSelect"
NewForm(YourSPForm)
2). Set the Form Item property as below:
YourSPForm.LastSubmit
3). Add a save button to save data by setting the OnSelect:
SubmitForm(YourSPForm)
In addition, if you want to auto-select the record you want to edit in your form, I suggest you add a Gallery to display all the records and set the OnSelect property of it as below:
Navigate(YourSPForm)
In this situation, you should change your Form Item property as below:
Gallery1.Selected