Change SalesForce Subject status from Jira

I have a webhook trigger based on the Jira ticket status, and I want to set the Status of a Subject the same as what is in Jira. I was trying to have it find the Subject based on the ID I'm passing from Jira; this ID was first pulled from SalesForce and placed in a custom field for future references. Here is the error I'm getting:

Message:
"\nfrom SubjectEntry__c where ( Id = ) limit 2\n ^\nERROR at Row:1:Column:44\nBind variables only allowed in Apex code"

Code: MALFORMED_QUERY

Source: Lookup

Timestamp: 2021-11-18T21:57:35.730Z

Error ID: 137230277

I tried using a handlebar expression {{data.SubjectID}} as a way for it to find the Subject in SalesForce, but apparently it didn't like that. Is it possible to update that field in the integrator? Full disclosure, I know very little about SOQL and even less about Apex code.

Hi @michaelwolfe -

It looks like you've been working with our Support team on some related issues. (Looks like the most recent email was from last Thursday.) If you get a chance to post an update here once you're done working with Support, it's much appreciated as it may help someone else down the line.
Thanks,

Kate