# Binding to child array
**URL:** https://discourse.aurelia.io/t/binding-to-child-array/4815
**Category:** Best Practices
**Created:** [June 18, 2022, 10:08pm UTC](https://discourse.aurelia.io/t/binding-to-child-array/4815 "2022-06-18T22:08:23Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@sarp](https://discourse.aurelia.io/u/sarp)
#### Post date: [June 18, 2022, 10:08pm UTC](https://discourse.aurelia.io/t/binding-to-child-array/4815/1 "2022-06-18T22:08:23Z")
Hey everyone,
I am trying to figure out a good way to handle this situation.
I have a ParentElement which displays a list. In the VM, I have `filters = []` which is an array of strings that I use to determine the filters to be applied to the list. I also have a ChildElement, which I use to chose available filters. The ChildElement’s VM has `@bindable filters = []` and I use two-way binding between the parent’s and child’s `filters` arrays.
My problem is that, sometimes I want to modify the filters like clear the items, remove a single element from the middle or assign the content of another array to filters. However, if I use approaches like `filters = [...anotherArray]` or `filters = []` or `filters = filters.filter(...)` I realize that the connection between the child filters and parent filters disappears. I believe it is because the reference to the original array is lost with the above-mentioned operations. What I want to know is, is there a preferred way to handle such situations? Should I just switch to event handlers? Is my approach fundamentally incorrect?
Any tips and pointers are appreciated.
---
### Author:  [@ormasoftchile](https://discourse.aurelia.io/u/ormasoftchile)
#### Post date: [June 19, 2022, 12:28am UTC](https://discourse.aurelia.io/t/binding-to-child-array/4815/2 "2022-06-19T00:28:12Z")
Regarding the filters, if you want to clear them, you could do
```auto
filters.splice(0, filters.length)
```
If you want to replace them with the contents of another array, this could work:
```auto
filters.splice(0, filters.length, ...anotherArray)
```
In both cases, the reference to the filters bindable is preserved.
Regards.