[solved] How to pass variables to query

[nandox5]

Hello,
I'm following this https://www.shopify.com/partners/blog/query-argument-graphql
i have the following

query($cursor: String, $since_id: String){
  orders(first: 2, after: $cursor, query: "id:>$since_id")
...

If you are wondering, this is from Shopify Graphql The cursor works fine, but for some reason, the $since_id variable is not getting detected. orders.query takes a string to do filtering etc..

If i manually type the order id ex: query: "id:>98734659765", it works, but i can't seem to be able to pass that info as a variable.

I am trying to start my search from the passed order number. However, i get this in return...

 "errors": [
    {
      "message": "Variable $since_id is declared by anonymous query but not used",
...

can anyone show me what i'm doing wrong?
P.S. i'm posting here since i believe this problem i'm encountering is due to lack of knowledge on graphql, and i have a feeling it's a syntax error rather than shopify's problem. I'm relatively new to graphql,

[nandox5]

I have to pass the entire filter query on the variable
variables:

{
  filterQuery: `id:>${orderId}`
}

above example is for javascript