ps.map and grid command

[DUNN JEREMY SIMON]

Good Afternoon,

Has anyone had probelsm with specifying a coordinate grid in ps.map ?

ps.map specifies the grid in meters , asking for one values , but this 
only produces on lon line when I execute the ps.map command. ?

I'm trying to specify a 50km grid but no luck, that is the grid isn't 
showing on the hardcopy output ?

Any one seen this before ?

Thanks 

Jeremy