Hi,
see screenshot 1

You have set this condition:
If "Rules" (hidden field) is equal to "Anmelden asl" hide fields.

But rules is empty so this condition is never met.

"Custom Value" in conditions is ignored, because you have choose to compare with another field and not with "Custom Value", see screenshot 2

can i make a hidden field that reads the stored value from the db and based on that autopopulates the form? i what kind of workaround do you use for this kind of behavior?

Hi,
you can use a simple workaround that do this without hack: you can simply fill value with javascript.

for example you can add something like this in your template (index.php)

<?php 

// PHP CODE TO FILL VAR $your_value FROM DB

?>

jQuery(document).ready(function($){

    $('#jform_aliasOfHiddenField').val('<?php echo $your_value; ?>').change();

});

NOTE: when you fill the value you need also to launch .change(), this trigger change events and apply conditions to hide/show fields

Hi,
sorry but I not understand your question.

this is a hidden field, so the user never change value, you will change value from db lookup and already trigger change event.
In my code below you change value and launch change event.

Hi,
sorry we does not support custom code, anyway your function seems wrong, at line:

$query->select($db->quoteName(prof);

- prof is not a var, it is a string so you need to replace with 'prof'
- you not have closed function select, missing ""