SHOW_PAGE with parameter binding generates invalid expression (CE0117)

[engalar]

Bug

SHOW_PAGE with $currentObject parameter binding in DATAGRID CONTROLBAR generates an invalid Mendix expression, causing CE0117.

MDL input

DATAGRID dgOrders (DataSource: DATABASE FROM MyModule.Order, Selection: Single) {
  CONTROLBAR cb {
    ACTIONBUTTON btnView (
      Caption: 'View',
      Action: SHOW_PAGE MyModule.Order_Detail(OrderParam: \$currentObject),
      ButtonStyle: Primary
    )
  }
  COLUMN colNum (Attribute: OrderNumber, Caption: 'Order')
}

Result

mxcli creates the page and button, but `mx check` reports:

```
CE0117 Error(s) in expression. Action button 'btnView' Page 'Order_Overview'
```

The generated parameter binding expression for `$currentObject` is invalid in the Mendix model.

Expected

The button should correctly pass the selected DATAGRID row to the target page parameter.

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Copied from engalar#41

Comments from original issue

@engalar (2026-04-07T09:20:44Z):

@engalar (2026-04-07T09:27:41Z):

Update: Root cause identified

The issue is not with `$currentObject` per se — it's that inside a DATAGRID CONTROLBAR, there is no DataView context, so `$currentObject` is undefined.

Correct approach

When DATAGRID has `Selection: Single`, the selected row is accessible via the widget name as a variable:

DATAGRID dgOrders (DataSource: DATABASE FROM MyModule.Order, Selection: Single) {
  CONTROLBAR cb {
    ACTIONBUTTON btnView (
      Caption: 'View',
      -- Use \$dgOrders (widget name), NOT \$currentObject
      Action: SHOW_PAGE MyModule.Order_Detail(OrderParam: \$dgOrders),
      ButtonStyle: Primary
    )
  }
}

Suggestion

mxcli should either:

1. Reject `$currentObject` in CONTROLBAR context with a clear error message pointing to the widget name variable
2. Auto-resolve `$currentObject` to the DATAGRID widget name when inside a CONTROLBAR

[github-actions]

Issue Triage

Summary:
The issue describes a bug where using $currentObject as a parameter binding in a DATAGRID CONTROLBAR’s SHOW_PAGE action generates an invalid Mendix expression, causing a CE0117 error.

Checklist of required bug‑report information

Required info	Present?	Details
mxcli version	❌	Not mentioned
Mendix version	❌	Not mentioned
Scenario (what the user was trying to do)	✅	MDL script with DATAGRID, CONTROLBAR, ACTIONBUTTON, SHOW_PAGE
Expected output	✅	Button should pass the selected DATAGRID row to the target page parameter
Experienced output (error message, wrong result, crash)	✅	CE0117 Error(s) in expression. Action button 'btnView' Page 'Order_Overview'
AI bug report (mxcli diag --bundle or session log)	❌	Not provided

What’s missing:
Please add the following details so we can investigate and fix the issue:

1. The version of mxcli you’re using (run mxcli --version or provide the commit/build info).
2. The Mendix version of the project you’re processing (e.g., 10.6.0, 9.24.0).
3. The output of mxcli diag --bundle (or at least the relevant session log) to see the internal state when the error occurs.

Once we have that information, we’ll be able to reproduce the problem and work on a fix. Thanks for reporting!

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