default num_maskmem =7 can we change thing number

i'm changing number num_maskmem =12 i'm getting error
maskmem_enc = maskmem_enc + self.maskmem_tpos_enc[self.num_maskmem - t_pos - 1]
IndexError: index 11 is out of bounds for dimension 0 with size 7

i'm changing this in yaml but still it did not changed

Start by tracing how num_maskmem is loaded from the YAML configuration to the maskmem_tpos_enc indexing expression shown in the report. Confirm where the value remains 7, then verify that changing it to 12 is reflected at runtime without the reported IndexError.

Written by the indexing model from the issue text.