CALCULATE A DATE WITH YEAR VARIABLE (NUMBER) DOESNT WORK

[Mattis PASSARD]

Hello Everyone,

I need some help..

I explain :

When my customer signs a contract, like 31/01/2020 (DD/MM/YYYY).

The 31/01 became the birthday date.

So i need to set the birthday at 31/01/ {current year +1} = 31/01/2025 (to have a reminder)

To calculate the year to add at my signs contract to became my birthday date I do this :

when custom field "SIGNS DATE" is set to a date, set custom field "ADD YEAR" to "{yearshort} - {{%SIGNS DATE}~YY} - 1"

ADD YEAR = 24 - (20 - 1)

ADD YEAR = 24 - 19

ADD YEAR = 5

(its works)

And i add 5 years to the date : 

when custom field "ADD YEAR" is set, set custom field "BIRTHDAY DATE" to "{%SIGNS DATE}+{%ADD YEAR}y"

In my head :

BIRTHDAY DATE = 31/01/2020 + 5 years

BIRTHDAY DATE = 31/01/2025

(not working)

The error :

Friday, February 9, 2024 10:46 AM

Running automation on board ...

Couldn't read a date in "{%BIRTHDAY DATE}+{%ADD YEAR}y".

The automation finished running.

I think i dont understand the arithmetic and formatting date doc :

https://support.atlassian.com/trello/docs/arithmetic-and-formatting-in-date-variables/ 

If anyone can help me on this 🙏

Other doc i've read : 

https://support.atlassian.com/trello/docs/working-with-custom-fields/#custom-field-arithmetic 

Thanks you,

Mattis P.

[Daydreamer Mike · Accepted solution]

Hi @Mattis PASSARD 

I can tell you what to do to fix this automation:

when custom field "ADD YEAR" is set, set custom field "BIRTHDAY DATE" to "{%SIGNS DATE}+{%ADD YEAR}y"

when custom field "ADD YEAR" is set, set custom field "BIRTHDAY DATE" to "{{%SIGNS DATE+{{%ADD YEAR}}y}}"

There may be a much easier way though.

when custom field "SIGNS DATE" is set, set custom field "BIRTHDAY DATE" to {{%SIGNS DATE={year}y}}

[Mattis PASSARD]

Hi Mike !

Thanks you a lot, your last automation works perfectly,

I do

when custom field "SIGNS DATE" is set, set custom field "BIRTHDAY DATE" to {{%SIGNS DATE={year}y+1y}}

To get the next year.

Thanks again ! 

Mattis P.