error in proc format code

[Ronein]

Hello

What is wrong with this proc format code??

I get an error

4917 low <- -5000 = '<-5000'
-
22
200
ERROR 22-322: Syntax error, expecting one of the following: (, ',', -, =.
ERROR 200-322: The symbol is not recognized and will be ignored.

proc format;
value ffmt
. = 'Missing'
low <- -5000 = '<-5000'
-5000 <- 0 = '[-5000,0)'
0 <- 1000 = '[0, 1000)'
1000 <- 5000 = '[1000 , 5000)'
5000 <- 10000 = '[5000, 10000)'
10000<-high='>10000';
run;

[andreas_lds]

Using <- in

low <- -5000 = '<-5000

 is the problem. Which value starts the range, if you exclude the lowest value?

[Jagadishkatam]

I updated the format low - -5000 by removing the < and it works, please check.

proc format;
value ffmt
. = 'Missing'
low - -5000 = '<-5000'
-5000 <- 0 = '[-5000,0)'
0 <- 1000 = '[0, 1000)'
1000 <- 5000 = '[1000 , 5000)'
5000 <- 10000 = '[5000, 10000)'
10000<-high='>10000';
run;