@Ruri
Haha I have been doing this wrong but achieving what I want, classic part when the code is wrong but do the job .

@eslambeto a few ways or thing that you can do (parse, custom and Headers)

BROWSERACTION Open 
NAVIGATE "https://google.com" 
BROWSERACTION GetCookies "google.com" 
PARSE "<COOKIES(NID)>" LR "" "" -> VAR "mycookies" 
REQUEST POST "https://google.com"   
  COOKIE "custom: <mycookies>" 
  HEADER "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36" 
  HEADER "Pragma: no-cache" 
  HEADER "Accept: */*" 
  HEADER "custom Cookies: <mycookies>"

This is what you mean? This date or Data

you need to put <COOKIES>

BROWSERACTION Open 
NAVIGATE "https://google.com" 
BROWSERACTION GetCookies "<COOKIES>"

this is the setting
https://ibb.co/xhsTZBK

try this maybe work

REQUEST POST "https://my website" 
  CONTENT "{\"operationName\":\"userLogin\",\"variables\":{\"input\":{\"email\":\"<USERNAME>\",\"password\":\"<PASSWORD>\",\"captcha\":\"<SOLUTION>\"}},\"query\":\"mutation userLogin($input: LoginInput!) {\\n userLogin(input: $input) {\\n user {\\n id\\n ...featureFlagsFatQuery\\n account {\\n id\\n ...accountFatQuery\\n __typename\\n }\\n __typename\\n }\\n __typename\\n }\\n}\\n\\nfragment accountFatQuery on Account {\\n accountId\\n accountType\\n displayName\\n emailAddress\\n hasProductSubscription\\n token\\n __typename\\n}\\n\\nfragment featureFlagsFatQuery on User {\\n account {\\n accountId\\n accountType\\n displayName\\n featureFlagsHash\\n hasProductSubscription\\n productSubscription {\\n id\\n type\\n typeCode\\n __typename\\n }\\n __typename\\n }\\n __typename\\n}\\n\"}" 
  CONTENTTYPE "application/json" 
  HEADER "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36" 
  HEADER "Pragma: no-cache" 
  HEADER "Accept: */*"

Yes is possible if you have the source code or if you have some basic reversing skills

That's what I did to use demi's plugins and Anomaly ones.