parentIds doesn't not include deep children

[Spheerys]

Hi,

I want to select the tags of all children of one specific parent.
Even if the doc talk about a parentIds parameter, it doesn't include all the children :

[[!smarttagTags?
                 &parentIds=`129`
                 &includeHiddenDocs=`1`
                 &tplWrapper=`@code:[[+smarttag.tags]]`
                 &tplItem=`@code:<button class="button" data-filter=".tag-[[+smarttag.tag]]">[[+smarttag.tag]] <span>([[+smarttag.count]])</span></button>`
                 &tvNames=`EventTags`
]]

The other parameter allTags is working, but for ALL the resources of the website !

[[!smarttagTags?
                 &allTags=`1`
                 &includeHiddenDocs=`1`
                 &tplWrapper=`@code:[[+smarttag.tags]]`
                 &tplItem=`@code:<button class="button" data-filter=".tag-[[+smarttag.tag]]">[[+smarttag.tag]] <span>([[+smarttag.count]])</span></button>`
                 &tvNames=`EventTags`
]]

Is there a way to select all the tags of children of a specific resource, without specify each direct parents ?

[goldsky]

try to nest it with http://modx.com/extras/package/getids

&parentIds=`[[!GetIds? &ids=`129,c129`]]`