subtract one minute from datetime in powerbuilder -

i have seen lot of info on how subtract 1 datetime other , how add years on datetime. following giving me headache. how subtract 1 minute date in powerbuilder?please , support.

thanks & regards rahul g

this how done in powerscript. easier if did in sql using dateadd function.

datetime ldt_thedate, ldt_newdate
time lt_thetime

// current date-time
ldt_thedate = datetime(today(), now())

// subtract 1 minute
lt_thetime = relativetime(time(ldt_thedate), -1)

// assemble date-time
ldt_newdate = datetime(date(ldt_thedate), lt_thetime)