# Elements names disappear in 3.5

**URL:** <https://forum.servoy.com/t/elements-names-disappear-in-3-5/8020>\
**Category:** Classic Servoy\
**Created:** [August 17, 2007, 7:33am UTC](https://forum.servoy.com/t/elements-names-disappear-in-3-5/8020 "2007-08-17T07:33:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rioba](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@rioba](https://forum.servoy.com/u/rioba)\
**Post date:** [August 17, 2007, 7:33am UTC](https://forum.servoy.com/t/elements-names-disappear-in-3-5/8020/1 "2007-08-17T07:33:10Z")

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In some forms some element names disappear.

I have a form named “fm\_sv\_control” containing 20 fields and 4 labels/buttons. Fields are named duplabi01, duplabi02 aso, the labels are named sv\_control\_label and sv\_control\_txt and the buttons names are sv\_control\_ok and sv\_control\_canc.

All field names are visible, while all label/button names are not visible in the elements list. I tried to change them, make a new form, but nothing happens.

However, if I rename the labels and the buttons control\_label, control\_canc (without the “sv\_”), these elements reappear in the elements list.

Anyone could tell me why this behaviour?

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**Author:** ![jcompagner](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/jcompagner/32/4889_2.png) [@jcompagner](https://forum.servoy.com/u/jcompagner)\
**Post date:** [August 20, 2007, 8:52am UTC](https://forum.servoy.com/t/elements-names-disappear-in-3-5/8020/2 "2007-08-20T08:52:40Z")

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sv\_ is our internal prefix and that prefix is also our filter what to display. So they only thing i can currently say, don’t use that specific prefix…

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**Author:** ![rioba](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@rioba](https://forum.servoy.com/u/rioba)\
**Post date:** [August 20, 2007, 5:56pm UTC](https://forum.servoy.com/t/elements-names-disappear-in-3-5/8020/3 "2007-08-20T17:56:37Z")

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Thank you for your reply. This clarifies the issue, and explains why the names worked correctly in previous releases.

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**Author:** ![jcompagner](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/jcompagner/32/4889_2.png) [@jcompagner](https://forum.servoy.com/u/jcompagner)\
**Post date:** [August 20, 2007, 6:25pm UTC](https://forum.servoy.com/t/elements-names-disappear-in-3-5/8020/4 "2007-08-20T18:25:08Z")

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we had to change the prefix because we had to generate better ids for the webclient because of browser issues. So from now on you shouldn’t start with sv\_ maybe we will make a warning for this when you edit the name