Extracting last year from $S_DATE

[Ed Gerrish]

Hi,
I have a project that I will automate annually.

I'm trying to find an efficient way to store last year (the data year) in a local macro. I have a solution but it seems inelegant. Here is my code:

local year =yofd(date("$S_DATE", "DMY"))
local year = `year'-1
di "`year'"

Is there a better way to do this? is there an $S_YEAR or something similar?

Thanks in advance!

[Andrew Musau]

`=real(substr("$S_DATE", -4, 4)) -1'

Res.:

 di `=real(substr("$S_DATE", -4, 4)) -1'
2020

[Ed Gerrish]

`=real(substr("$S_DATE", -4, 4)) -1'

Res.:

di `=real(substr("$S_DATE", -4, 4)) -1'
2020

Thank you!