Multiple values for one variable?

i've created first set of variables (using form properties>variables), tweeked xml sourcecode  , they're working .

what i'm trying figure out how have 1 variable has 2 values pop in 2 different text fields.

 

simple form @ point:

item, model , service tag.

the user selects item drop down list , service tag field autopopulated variables set.

 

how model appear based on item selection?

i tried putting 2 values 1 variable both values appear in same field.

variable info works: scan (variable) = mc3090bt (value)

i need particular variable = handheld scanner (try ignore redundancy).

 

i attempted make mc3090bt it's own variable handheld scanner it's value, , add code below didn't work.

 

 

here's of code if helps:

 

<event activity="change" name="event__change">

               <script contenttype="application/x-javascript">if(xfa.event.newtext == "handheld scanner"){

    servicetag.rawvalue = scan.value;

}else if(xfa.event.newtext == "latitude x1"){

    servicetag.rawvalue = x1.value;

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