Thank You for reply.
I want to add to my control, configuration field like in image attachement below, and get the values from it. I know that, If I want to add to configuration simple inputs, I write in metadata section of my xbl file:
<control-details>
<xf:input ref="@resource">
<xf:label lang="en">Resource URI</xf:label>
...
</xf:input>
</control-details>
but I don't know how to put to configuration panel repeat-field with '+' icon, and how to retrieve data from this field.
regards,
Tom