# If exists objects
**URL:** https://discourse.nodered.org/t/if-exists-objects/839
**Category:** General
**Created:** [15 June 2018 21:03 UTC](https://discourse.nodered.org/t/if-exists-objects/839 "2018-06-15T21:03:36Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@RogierQ](https://discourse.nodered.org/u/RogierQ)
#### Post date: [15 June 2018 21:03 UTC](https://discourse.nodered.org/t/if-exists-objects/839/1 "2018-06-15T21:03:36Z")
Hi!
I have this
payload.Response.Appointment
or
payload.Response.Objects this…
if i do a test like if ( msg.payload.Response.Objects == null ){
i get an error, whatr am i doing wrong???
---
### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [15 June 2018 21:07 UTC](https://discourse.nodered.org/t/if-exists-objects/839/2 "2018-06-15T21:07:59Z")
Without sharing the error you are getting it is very hard to say what is wrong.
---
### Author:  [@RogierQ](https://discourse.nodered.org/u/RogierQ)
#### Post date: [15 June 2018 21:09 UTC](https://discourse.nodered.org/t/if-exists-objects/839/3 "2018-06-15T21:09:55Z")
Sorry… thought it would be clear what i do wrong…
The error i get is
“TypeError: Cannot read property ‘0’ of undefined”
---
### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [15 June 2018 21:12 UTC](https://discourse.nodered.org/t/if-exists-objects/839/4 "2018-06-15T21:12:56Z")
An error of `“TypeError: Cannot read property ‘0’ of undefined”` means you are trying to access a property called `0` of something that is undefined.
The only example properties you have mentioned are `payload.Response.Appointment` and `payload.Response.Objects` - neither of which mention `0`.
So, I think you need to share a bit more detail of what you’re doing.
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [15 June 2018 21:21 UTC](https://discourse.nodered.org/t/if-exists-objects/839/5 "2018-06-15T21:21:36Z")
If you are trying to determine whether a property of an object exists then use `hasOwnProperty("property_name")`. So for example
```auto
if (msg.payload.Response.hasOwnProperty("Objects"))
```
will tell you whether msg.payload.Response has a property of that name.