About the study to establish a seawater intrusion model when adding a pumping well, pumping well flow ST file setting?

Dear all,
Richards_flow was used when I built the seawater intrusion model. I added a pumping WELL point “WELL”.I want to set the pumping flow rate to 4.9ml/s, so how should I set the value under the keyword “$DIS_TYPE” in the ST file, and what mathematical relationship should be satisfied between the pumping flow rate and the value?
Here are my ST file Settings.

#SOURCE_TERM
$PCS_TYPE
RICHARDS_FLOW
$PRIMARY_VARIABLE
PRESSURE1
$GEO_TYPE
POINT WELL
$DIS_TYPE
CONSTANT
#STOP

Here are my GLI file Settings.

#POINTS
0 0 0 0
1 0.38 0 0
2 0.38 0 0.037
3 0.38 0 0.076
4 0.38 0 0.129
5 0 0 0.130
6 0 0 0.076
7 0 0 0.037
8 0.38 0.1 0
9 0.38 -0.1 0
10 0.38 0.1 0.129
11 0.38 -0.1 0.129
12 0.19 0 0.085 $NAME WELL
#POLYLINE
$NAME
boundary
$EPSILON
0.0001
$POINTS
0
1
2
3
4
5
6
7
0
#POLYLINE
$NAME
up
$EPSILON
0.001
$POINTS
3
4
5
6
3
$MAT_GROUP
0
#POLYLINE
$NAME
medium
$EPSILON
0.001
$POINTS
2
3
6
7
2
$MAT_GROUP
1
#POLYLINE
$NAME
dowm
$EPSILON
0.001
$POINTS
1
2
7
0
1
$MAT_GROUP
2
#POLYLINE
$NAME
right
$EPSILON
0.001
$POINTS
1
2
3
4
10
8
1
#POLYLINE
$NAME
sea
$EPSILON
0.001
$POINTS
1
2
3
4
#POLYLINE
$NAME
fre
$EPSILON
0.001
$POINTS
0
7
6
5
#SURFACE
$NAME
sf_up
$POLYLINES
up
$MAT_GROUP
0
$TYPE
0
#SURFACE
$NAME
sf_medium
$POLYLINES
medium
$MAT_GROUP
1
$TYPE
0
#SURFACE
$NAME
sf_down
$POLYLINES
dowm
$MAT_GROUP
2
$TYPE
0
#SURFACE
$NAME
sf_right
$POLYLINES
right
$TYPE
0
#STOP
Thank you for your help.