Creating a time stamp from a command

Afternoon everyone
I believe I am on the correct list, and it will become apparent as you read
my e-mail

To coin an old Monty Python phrase
"My brain hurts"
I am attempting to create a command

CMD PROMPT(' ')

PARM KWD(SCREENUSER) TYPE(*CHAR) LEN(10) MIN(1) +
PROMPT('User Profile:')
PARM KWD(FROMDATE) TYPE(*DATE) MIN(1) +
PROMPT('From Date:')
PARM KWD(FROMTIME) TYPE(*TIME) MIN(1) +
PROMPT('From Time:')
PARM KWD(THRUDATE) TYPE(*DATE) MIN(1) +
PROMPT('Thru Date:')
PARM KWD(THRUTIME) TYPE(*TIME) MIN(1) +
PROMPT('Thru Time:')

That accepts a user profile name, a From date, a From time, a Thru date and
a Thru time

I created the command and when I place values into the different fields
this is what I find
For the date fields, it recognizes invalid dates, but the valid dates can
be entered in the following formats
02/28/10
022810
02/28/2010
02282010

The time fields recognize invalid times, but the valid times can be entered
in the following formats

050000
0500
05:00:00
05:00

My problem is that within the RPGILE program to process the command, I
need to take both the From date & time (and the Thru date and time) and
create timestamps and for some reason my mind becomes blank
I am hoping someone has done this already and can point me in the right
direction

As always all answers gratefully accepted


Thanks in advance