Add granite:data to cq dialog textfield - aem

Question

I am trying to create a validation function for a textfield depending on the content of other textfield in a cq dialog in AEM 6.5.
I am trying to send within the cq:data the textfield name but I can get AEM to render these data attributes on DOM.
This is a piece of the cq dialog
<creditsTitle
jcr:primaryType="nt:unstructured"
sling:resourceType="granite/ui/components/coral/foundation/form/textfield"
fieldLabel="Credits Title"
name="./creditsTitle_t"/>
<creditsValue
jcr:primaryType="nt:unstructured"
sling:resourceType="granite/ui/components/coral/foundation/form/textfield"
fieldLabel="Credits"
validation="custo-validation"
name="./creditsValue_t">
<granite:data jcr:primaryType="nt:unstructured"
dependent-name="creditsTitle_t"/> </creditsValue>
And here is a ss of what gets rendered:
I want to be able to send to the "custo-validation" a parameter with the name of the field that it needs to check,in this case is the one above (creditsTitle_t), but it can be anywhere.
So far the only way I have found is with the granite:data but i can't get it working

Answer 1

Your code looks good. just make sure you're adding the granite namespace at the top of the file
<jcr:root xmlns:jcr="http://www.jcp.org/jcr/1.0"
xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
xmlns:sling="http://sling.apache.org/jcr/sling/1.0"
xmlns:granite="http://www.adobe.com/jcr/granite/1.0"
sling:resourceType="cq/gui/components/authoring/dialog"
....