REPEATER area - copy enetred value from the first repeater entry to another field

Hello, need the guru help🙂
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I have a multipage form for the seminar with the possibility to enter many participants and one bill generated afterwards;
My problem is that i cannot get data (entered values) from the first entered participant inside the repeater to put it on the bill.:
debug information is as follows for that first entry:
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​[pre] [rep] => Array
([br] [1] => Array[br] ([br] [dal_uzv] => Participant#1Surname[br] [dal_vards] => Participant#1Name[br] [dal_kods] => Participant#1number[br] [dal_epasts] => Participant#1email[br] )[br][br] [2] => Array[br] ([br] [dal_uzv] => Participant#2Surname[br] [dal_vards] => Participant#1Name[br] [dal_kods] => Participant#2number[br] [dal_epasts] => Participant#1email[br] )[br][br] )[/pre]
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tried different ways -
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{data:[rep][1][dal_uzv]}
{data:rep[1][dal_uzv]}
..etc...
none is working.
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I can get any other value entered outside the repeater though; with the code : {data:field_name} --- any ideas?
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Thanks!
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ELita
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P.S. this post [br]http://www.chronoengine.com/forums/posts/t107620/repeater-area-keep-first-entry
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does not work for me since all the form is based on the repeater key value and it will make it very complicated if i try to duplicate the first entry outside the repeater.

{data:rep.0.dal_uvz}

thanks healyhatman, it is the right syntax - exactly what i needed 🙂
My array begins with 1, so it will be {data:rep.1.dal_uzv}