Adding a new FILTER in the VCF header

[saty89]

Hi, is there a way to add a new FILTER ID to the header. I tried to add it as like key=value pair for dictionary but doesn't seem to work.
For example -
inputvcf_reader.filters['Test']="Filter(id='Test', desc='Add a new ID')"

Seems like not recognizing due to quotes but not sure as I get the following in the output vcf

##FILTER=<ID=F,Description="i">

Any help is appreciated. Thanks!