Block state up to 32 numbers or block state as string

When performing a specific action in the game, I change the value of the NBT tag called "testTag". Then, when the condition is met ("testTag" == 0 , testTag" == 1 etc.), an action should be performed which should set the blockState (of the IntegerProperty variable) (ageC) to the value 0, 1, 2 etc.
https://i.imgur.com/YR1Ir1b.png

The ageC variable is "pot"
https://i.imgur.com/fSiu5te.png

Then in the blockstate directory the bsmkii.json file
{
 "variants": {
  "pot=0": {
     "model": "xxxx:block/bsmkii"
   }, "pot=1" : {
     "model": "xxxx:block/p1"
   },
   "pot=2" : {
     "model": "xxxx:block/p2"
   },

will read the selected block to me. I want to control the type/appearance of the block using the nbt tag.
 

ufff....  It worked great for me in the previous version of mcreator.

MCreator 2021.2 - Forge 1.15.2

I don't know why but I restarted the game and now it works.... On the one hand I'm happy, but on the other I'm angry why it didn't work before...

in version 2021.3 - 1.17.1 nothing works for me anymore... I don't know how to fix it...

sad.. and I wanted to update the already finished mod to a newer version...

I just need to somehow create a new variable that can be referenced via NTB TAG.

If I don't find a solution, I'll probably have to do it manually and add dozens of blocks... But I'll somehow finish this mod in 2-3 more versions and publish it :)

https://imgur.com/a/j84ILwO
https://imgur.com/a/g0nrDTH

How can I fix the code so that it doesn't throw errors when creating a new variable?

Oh, indeed! My lack of Java knowledge is taking its toll on me...

https://imgur.com/a/Pz6hvTt
 

Now more bugs...