Modding Help Need help with radioGroup

I'm simply trying to filter my objects on my table. Below are all the filter names I wish to filter.
( The code below just shows the radioGroup. Not the whole code.)

Code:

"categories" : {
      "type" : "radioGroup",
      "toggleMode" : false,
      "buttons" : [
        {
          "selected" : true,
          "position" : [4, 221],
          "baseImage" : "/interface/crafting/unselectedTab.png",
          "baseImageChecked" : "/interface/crafting/selectedTab.png",
          "data" : {
            "filter" : [ "decorative" ]
          }
        },
        {
          "position" : [31, 221],
          "baseImage" : "/interface/crafting/unselectedTab.png",
          "baseImageChecked" : "/interface/crafting/selectedTab.png",
          "data" : {
            "filter" : [ "door" ]
          }
        },
        {
          "position" : [58, 221],
          "baseImage" : "/interface/crafting/unselectedTab.png",
          "baseImageChecked" : "/interface/crafting/selectedTab.png",
          "data" : {
            "filter" : [ "sign" ]
          }
        },
        {
          "position" : [85, 221],
          "baseImage" : "/interface/crafting/unselectedTab.png",
          "baseImageChecked" : "/interface/crafting/selectedTab.png",
          "data" : {
            "filter" : [ "storage" ]
          }
        },
        {
          "position" : [112, 221],
          "baseImage" : "/interface/crafting/unselectedTab.png",
          "baseImageChecked" : "/interface/crafting/selectedTab.png",
          "data" : {
            "filter" : [ "symbol -mounted-" ]
          }
        },
        {
          "position" : [139, 221],
          "baseImage" : "/interface/crafting/unselectedTab.png",
          "baseImageChecked" : "/interface/crafting/selectedTab.png",
          "data" : {
            "filter" : [ "symbol -unmounted-" ]
          }

On my objects I have the categories set to the filter names. But each tab still shows nothing. Here is the code for one of my sign objects.

Code:

{
  "objectName" : "db_sign_medieval_red",
  "rarity" : "Common",
  "category" : "sign",
  "price" : 10,
  "description" : "A category sign for medieval in a red color.",
  "shortdescription" : "Red Medieval Sign",
  "race" : "generic",
  "printable" : false,
  "lightColor" : [80, 12, 12],

  "flickerPeriod" : 0.2,
  "flickerMinIntensity" : 0.99,
  "flickerMaxIntensity" : 1,
  "flickerPeriodVariance" : 0.0,
  "flickerIntensityVariance" : 0.05,

  "inventoryIcon" : "db_sign_red_icon.png",
  "orientations" : [
    {
      "imageLayers" : [ { "image" : "db_sign_medieval_red.png:<color>.<frame>", "fullbright" : true }, { "image" : "db_sign_medieval_lit.png:<color>.<frame>" } ],
      "imagePosition" : [-32, -8],
      "animationCycle" : 1,
      "frames" : 8,
      "spaceScan" : 0.1,
      "anchors" : [ "background" ]
    }
  ]
}

Clearly I'm missing something ( most likely right in front of my face ).

Thanks in advance