Tagging with drop down menu

[vinvi...@gmail.com]

Hello,

I have this button to create a new tiddler:

\define Tags() [[$(currentTiddler)$]] [[(EXTRA-TAG)]]

<div style="float:left;"><$button>

<$action-sendmessage $message="tm-new-tiddler" 

title="TIDDLER-NAME" 

text="TEXT-FIELD-HERE" 

tags=<<Tags>> 

field="FIELD-TEXT" 

field2="FIELD-TEXT"

/>

<span style="color:black;">''BUTTON-NAME''</span>

</$button></div>

This allows me to create a new tiddler that is tagged with the CurrentTiddler (and other) and listted with:

<$list filter="[tag<currentTiddler>tag[(EXTRA-TAG)]]">

{{!!text}}

</$list>

Works fine. The only problem is:

1 I cannot tag existing tiddlers with it.

2 It can also happen that I create different tiddlers with a different spelled title but the same meaning. (Which should be the same tiddler. Eg: Plants or Flora.)

What I am thinking of is a Drop down menu that shows all tiddlers with specific tag / tags. And that after selection, the tag of the CurrentTiddler and any other predefined tags are automatically added to.

I have this code:

Select: <$select tiddler='$:/generated-list-demo-state'>

<$list filter='[tag[(EXTRA-TAG)]]'>

<option><$view field='title'/></option>

</$list>

</$select>

<$tiddler tiddler={{$:/generated-list-demo-state}}>

<$transclude mode='block'/>

</$tiddler>

The above code gives a drop down menu showing all tiddlers with tag (EXTRA-TAG). After selection, the text field of the selected tiddler will be shown below it.

How can I adjust this code so that tiddlers after selection are automatically tagged with CurrentTiddler and an extra tag?

Probably someone knows a better solution to my problem?

Thanks,