### Describe the bug The operation to dynamically substitute variables in the Qdrant Search Filter within the Agent node of Agent Flows is not functioning. ### To Reproduce 1. Click the agent node 2. Select Qdrant from the vector store 3. Create a Qdrant search filter in the Qdrant parameters (e.g. $vars.contract_date) ### Expected behavior The user expects the dynamic variable to be replaced with the value they entered. ### Screenshots <img width="435" height="322" alt="Image" src="https://github.com/user-attachments/assets/a1163f39-e04d-4d03-b3ff-8a416ca5b3be" /> ### Flow _No response_ ### Use Method None ### Flowise Version _No response_ ### Operating System None ### Browser None ### Additional context _No response_