Two or more requirements in level_requirements?

[closer_ex]

I'm planning on making a mutually exclusive skill table just like killing floor 2, which means if you activate a perk, the other perk of the same level on the other side is deactivated.

The Killing Floor skill table

My skill table in game

I've get this feature done but there is a very confusing issue. Now I want the perk from level 2 on to require both level of root attribute and level of the previous perk, so I write following codes:

 

<perk desc_key="perkMedicTeamplayer2Desc" max_level="1" icon="icon_medic_teamplayer" parent="skillTeamplayer" name="perkMedicTeamplayer2" name_key="perkMedicTeamplayer2Name">
  <level_requirements level="1">
    <requirement name="ProgressionLevel" progression_name="attMedic" operation="GTE" value="2" desc_key="reqMedicLevel02"/>
    <requirements compare_type="or">
      <requirement name="ProgressionLevel" progression_name="perkMedicTeamplayer1" operation="GTE" value="1"/>
      <requirement name="ProgressionLevel" progression_name="perkMedicSurvivor1" operation="GTE" value="1"/>
    </requirements>
  </level_requirements>
  <effect_group>
    <effect_description desc_base="perkMedicTeamplayer2Name" long_desc_key="perkMedicTeamplayer2LongDesc" level="1"/>
  </effect_group>
  <effect_group>
    <triggered_effect trigger="onPerkLevelChanged" action="SetProgressionLevel" progression_name="perkMedicSurvivor2" level="0">
      <requirement name="ProgressionLevel" progression_name="perkMedicTeamplayer2" operation="GTE" value="1"/>
    </triggered_effect>
  </effect_group>
</perk>

Which fail to do the job. They still require only attribute level to purchase. I guess it's the level_requirements only takes one requirement since all the blocks in vallina configs contains only one, but not exactly sure about it.

 

Besides, I tried to make perks free, i.e. takes 0 skillpoint to buy, but they turned NA in game and I can't buy them. Is this a perkbook only feature?

 

Also, when I reset skills, the root attribute is downed to level 1, but its min level is set to be 0. I could prepend a useless level though, but it's still annoying..