After a no of variation the assigned second variation doesnt behave

Hello,

I have an issue with defalut woocommerce.

I have variaton 1 with values A,B,C
I have varion 2 with values blue, red, yellow, gey, green etc etc

When someone selects variaton 1 value A
i want to have to choose on variaton 2 between blue and red
When someone selects variaton 1 value B
i want to have to choose on variaton 2 between grey, yellow
When someone selects variaton 1 value C
i want to have to choose on variaton 2 between grey, yellow,bue, green

Everything works properly when i have low number of values on variaton 2. I tried to do that with 35 values on variaton 2 and it doesnt work. i have assigned 10 to A and 25 to be but the system shows all tha varation2’s values after i choose variaton 1.

Any idea how i can fix it?

Best Regards,
Atsouf