better config file

openlane/user_proj_example/config.tcl

diff --git a/openlane/user_proj_example/config.tcl b/openlane/user_proj_example/config.tcl
index 87769bc..60c6bc9 100755
--- a/openlane/user_proj_example/config.tcl
+++ b/openlane/user_proj_example/config.tcl
@@ -40,16 +40,18 @@
 set ::env(CLOCK_PERIOD) "10"
 
 set ::env(FP_SIZING) absolute
-set ::env(DIE_AREA) "0 0 1000 1000"
+set ::env(DIE_AREA) "0 0 2000 2000"
 set ::env(DESIGN_IS_CORE) 0
 
+set ::env(GLB_RT_MAXLAYER) 4
+
 set ::env(VDD_NETS) [list {vccd1} {vccd2} {vdda1} {vdda2}]
 set ::env(GND_NETS) [list {vssd1} {vssd2} {vssa1} {vssa2}]
 
 set ::env(FP_PIN_ORDER_CFG) $script_dir/pin_order.cfg
 
 #set ::env(PL_BASIC_PLACEMENT) 1
-set ::env(PL_TARGET_DENSITY) 0.35
+set ::env(PL_TARGET_DENSITY) 0.30
 
 # If you're going to use multiple power domains, then keep this disabled.
 set ::env(RUN_CVC) 0