Rule-Syntax for multiple Checks ?

Hello,

I need help to create a positive Rule (allow) with multiple Checks.
All the "CHAIN" examples  I found, was only with ONE additional Check.

How can I work with multiple Checks in one Rule?

I want to ALLOW this REQUEST => if the URL and the Parameter-Syntax are 
correct !
Examples:
https://XXXXXXX.XXXXXXX.de/eddfue/getMT940?berater=3
or
https://XXXXXXX.XXXXXXX.de/eddfue/getMT940?berater=3&from=2008-05-05
or
https://XXXXXXX.XXXXXXX.de/eddfue/getMT940?from=2008-05-05
.
.

I've  configured something like this   (!!! but it don't work !!!)

SecRule REQUEST_URI "^/eddfue/(get|list)MT940" 
"phase:2,chain,allow,msg:'VALID URL',id:'ed-15-004',severity:'7'"
SecRule ARGS_GET:from        "^\d{4}-\d{2}-\d{2}$"    "chain"
SecRule ARGS_GET:berater   "^\d+$"                            "chain"
SecRule ARGS_GET:to            "^\d{4}-\d{2}-\d{2}$"

What's wrong ?

ModSecurity Version: 2.5.2