# Maths stuff not working between machines
**URL:** https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009
**Category:** General
**Created:** [8 October 2021 08:51 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009 "2021-10-08T08:51:47Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [8 October 2021 08:51 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/1 "2021-10-08T08:51:47Z")
This is weird.
Forgetting previous stuff here is the problem I now am seeing/have.
This code:
```auto
counter = counter + 1;
context.set("COUNTER",counter);
node.warn("TOTAL is " + total);
total = total + x;
node.warn("TOTAL IS NOW " + total);
context.set("total",total);
msg.payload = total;
return msg;
```
This is what I see - given I `reset` the flow at the start. (Sorry it scrolled off the top of the screen)
NR 2.0.1
It starts at `0` and each time I press the `8` it increments by `8`.
On the **OTHER** machine....
This is what I'm getting:
NR 1.2.6
The _maths_ isn't being honoured.
It would seem that it is being parsed as text.... and the new messages appended to the previous message instead of being added.
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [8 October 2021 09:05 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/2 "2021-10-08T09:05:14Z")
You will find the context value total or the variable new\_value is a string. Use parseInt to convert it to a number before adding the new number.
---
### Author:  [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [8 October 2021 09:06 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/3 "2021-10-08T09:06:47Z")
But why is it working on the other machine?
Or (sorry) is that for 1.2.6 and was fixed in 2.0.1?
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [8 October 2021 09:07 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/4 "2021-10-08T09:07:39Z")
Because on the other machine they will be numbers. When you add two numbers you get a number. When you add a string and a number it gets concatenated.
Just make sure they are both numbers by using parseInt.
---
### Author:  [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [8 October 2021 09:07 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/5 "2021-10-08T09:07:57Z")
Thanks.
I'm stupid.
😉
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [8 October 2021 09:19 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/7 "2021-10-08T09:19:16Z")
> [@Steve-Mcl](#):
>
> Just make sure they are both numbers by using parseInt.
Unless they are not integers, in which case use parseFloat. In fact I would just use Number() which will convert it based on the contents.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [22 October 2021 09:19 UTC](https://discourse.nodered.org/t/maths-stuff-not-working-between-machines/52009/8 "2021-10-22T09:19:39Z")
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