Hi,
How to limit the input of a number to 2 digits. I used the following validation as a program rule. It is not working.
d2:validatePattern( A{Idade},‘[0-9]{2}’)
A{Idade} is a tracked entity attribute of positive integer data type.
Any help is welcome.
Hello
Did you try d2:length ?
Hey davuya,
I think you got it right but would you try to change it a bit by adding an exclamation mark ! to the beginning and changing '[0-9 to d, like the following expression:
!d2:validatePattern(A{Idade},'\\d{2}')
So this triggers an action if a number is not two digits.
Hi @Gassim,
I used the following expression as you have suggested.
But the action is triggered before entering profile data
I clicked close and entered data, but the expression is not validating
Thanks
Hi @didate,
I have tried d2:length but it does not work. I think it expects string as a parameter.
Thanks
Hi @dmbantu . Not sure if you are planning to use Android but just wanted to mention that due to this bug ([DHIS2-9854] - Jira) the program rule using the A{XXX} won’t work.
If that is the case your program rule should not be using A{XXX} until the issue is fixed in the backend. Please use directly ‘Idade’
Hi @jaime.bosque,
How should the PR expression be to directly use idade? Do I have to use the program variable idade I created without the d2:validatepattern?
Thanks
Okay sorry we’d difficulty with the above, but how about making it simple by creating two Program Rules as follows:
If you can put that into one expression go ahead. I’m still learning, but it worked this way. 
And sorry I didn’t know there’s a bug with A{XXX} in Android.
I think that’s going to mean we need to use a function such as d2:count(‘Idade’) rather than directly using the variable A{‘Idade’}, right?
Hi @Gassim,
Thank you. I will create two program rules as you suggested.
Youre welcome (:… and yes it worked but we still need to figure out how to use the variable directly because A{‘Idade’} isn’t going to work for Android as @jaime.bosque said.
