Using Autocomplete Rules to Default assignment values for HDL loads

Summary:

Can Autocomplete Rules be used to default assignment values for HDL loads?

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We have implemented several autocomplete rules for defaulting, but only for specific responsive pages. We are looking to add rules for HDL loads to default values - but haven't seen many examples or documentation on how to accomplish this. Is this a valid scenario? (We know validations would trigger for HDLs unless specifically filtered to not include - but we haven't quite gotten our head around how defaulting would work and if it is possible).

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