How to change tabIndex in a freeform formview layout?

Below a picture of a formview.

Attachment 43997


The four highlighted fields are edited in a groupeditor. The others in different kind of editors.
I navigate through the fields of the formview with the formViewNavigate() function.
But want to tab through the group editor fields all at once, without being interrupted by other fields

I tried to add an alternative (preferred) tabIndex in the definition of the layout (see below). With no success.
How can one change the default tab order in a formview?

Quote:

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<span style="text-align:left;" tabIndex="1">{Relaties_bedrijfs_naam}</span>
<span style="float:right;text-align:right;padding-right:10px;" tabIndex="2">{Relaties_telefoon}</span><br/>
<span style="text-align:left;" tabIndex="6">{Relaties_straat_postbus}</span>&nbsp;<span style="text-align:left;" tabIndex="7">{Relaties_huis_postbus_num}</span>
<span style="float:right;text-align:right;padding-right:10px;" tabIndex="3">{Relaties_mobiel}</span><br/>
<span style="text-align:left;" tabIndex="8">{Relaties_postkode}</span>&nbsp;<span style="text-align:left;" tabIndex="9">{Relaties_woonplaats}</span>
<span style="text-align:left;" tabIndex="10">{Land_Kod_kode}</span>
<span style="float:right;text-align:right;padding-right:10px;" tabIndex="4">{Medewerk_kode}</span><br/>
<span style="float:right;text-align:right;padding-right:10px;" tabIndex="5"">{Relaties_mail}</span><br/>
<span style="text-align:left;" tabIndex="11">{Relaties_opmerkingen}</span>

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Thanks in advance

Copy your UX and replace your List Source with some static data. Remove whatever else is extraneous to the question... and post the UX. I'm assuming the <span> stuff you've posted is just part of the layout... you've not posted all of it. I doubt a tabIndex will get you what you want... rather a better layout may be the answer. But trying to guess how you've built your UX and FormView in order to test a solution is way too much work. Post a sample which illustrates your question.