fix(create): increment variable name for each relationTarget

packages/ra-cubicweb/src/index.ts

@@ -201,9 +201,9 @@
       }
     });
 
-    const counter = 0;
+    let counter = 0;
     function addRelation(
       relationName: string,
       resourceRole: "subject" | "object",
       targetId: number
     ) {
@@ -205,9 +205,9 @@
     function addRelation(
       relationName: string,
       resourceRole: "subject" | "object",
       targetId: number
     ) {
-      const relationTargetVariable = `Y${counter}`;
+      const relationTargetVariable = `Y${counter++}`;
       if (resourceRole === "subject") {
         assignments.push(`X ${relationName} ${relationTargetVariable}`);
       } else {