Shedules Settings Issue in Zoho Creator

Shedules Settings Issue in Zoho Creator

I'm using Zoho Creator and want to add rules to trigger an email notification whenever one of these criteria is met:

1. It's 7th day after the date recorded in death_date field, which is Date-Time type field
2. The 40th day, respectively
3. And one year past after that date

I want the system to send reminders in form of email notification 2 days before those specified dates. I've created some schedules (see screenshot):



But the Form and Field fields are inactive, so I can't edit them.

And here is my script:

sendmail
[
from:zoho.adminuserid
to:"sarkisyan.hayk@gmail.com","requiem.f.s@gmail.com"
subject:"7 дней " + input.FIO
message:"Покойник:&nbsp;" + input.FIO + ",&nbsp;" + input.CnundTaretiv + " года рождения.<div>Скончался:&nbsp;" + input.death_date + "<br>Контактное лицо 1:&nbsp;" + input.KontLico + " Телефон:&nbsp;" + input.Tel + "<br><div>Контактное лицо 2: " + input.KontLico1 + " " + input.Tel1 + "</div></div>"
content type:HTML
]

Which, as you can see, supposed to send e-mail containing information about the specific person 4 days after the day of his death. 
But it doesn't work. Also, I can't find any information about using "Execute now" button. When you press it a modal window pops out requesting input arguments:



I need to fill-in the ID filed, which stores data in this format XXX-XX-XX, but if you try to insert some of existing values form records of form it will never work. Though, it works if you pass nothing, in that case I get the same e-mail all the time, with the details from same record.
And it works if you pass random numeric value like "111", and I get email containing "null" as a result of evaluating deluge expressions.