Update Custom Update/Edit Page for an API endpoint

ASP.NET Maker General Discussion (ASP.NET Maker)
1

I am currently debugging an endpoint for my custom API page. When I make changes or update my page, I click on the “Save” button. I want the API endpoint to be called when some conditions are satisfied. The sessions are empty. How do I do that on ASP.NET Maker, instead of using VS Code? This is my method:

public void RowUpdated(Dictionary<string, object?> oldRow, Dictionary<string, object?> newRow)
   {
       
       // Helper: To read from newRow with fallback to oldRow
       string GetValue(Dictionary<string, object?>? n, Dictionary<string, object?>? o, string key) =>
           (n != null && n.ContainsKey(key) && n[key] != null) ? ConvertToString(n[key]) :
           (o != null && o.ContainsKey(key) && o[key] != null) ? ConvertToString(o[key]) : "";
   
       // Normalize processing platform friendly names to canonical code
       string NormalizeProcessingPlatform(string platform) {
           if (Empty(platform)) return platform;
           platform = platform.Trim();
           if (SameText(platform, "Pag"))
               return "PG_01";

         
           return platform;
       }
   
       // Apply defaults to ensure no empty required fields
       string ApplyDefault(string value, string defaultValue) =>
           string.IsNullOrWhiteSpace(value) ? defaultValue : value;
   
       // Check request status
       string requestStatus = GetValue(newRow, oldRow, "Request_Status");
      
       if (requestStatus == "Released For Immediate Payment") {
          
           // Core fields for payment service calls
           string entityID = GetValue(newRow, oldRow, "Entity_ID");
           string referenceNumber = GetValue(newRow, oldRow, "RequestID");
     
   
           destinationBankUID = "40090E2F-7446-4217-9345-7BBAGDTGHHJB7043C4C"; 
           destinationAccount = "0000000000";         
       
   
           // Normalize processing platform
           string normalizedPlatform = NormalizeProcessingPlatform(processingPlatformRaw);
   
   
           // Set all session variables
           Session["ExEntityID"] = entityID;
           Session["ExReferenceNumber"] = referenceNumber;
           Session["ExTransferType"] = transferType;
           Session["ExTotalAmountDue"] = totalAmountDue;
           Session["ExDestinationAccount"] = destinationAccount; // TEST: 0000000000
           Session["ExDestinationPhone"] = destinationPhone;
                
       } 
   }