Anim bp child override random sequence player

Hi, i would like to override a random sequence player in a child anim bp
i currently have this setup ( to override it with one animation )
but it’s “not thread safe” according to UE ( it should be because the variable is only set in bp but not in code )

is there a classic way to handle this kind of situation ? ( i could add an other bool variable and set it up at the same time and this would be thread safe, but feels cumbersome )