It should work, maybe some memory problem? (are you declaring your vars?)
I ran this code three times and I've got:
LOCAL lcField, lnItem, lnRepeats, lnRepeat, lcValue
LOCAL laArray(100)
RAND(-1)
FOR lnItem = 1 TO 100
lcValue = ''
lnRepeats = RAND() * 5000 + 1
FOR lnRepeat = 1 TO lnRepeats
lcValue = lcValue + SYS(2015)
NEXT lnRepeat
laArray[lnItem] = lcValue
NEXT lnItem
lcValue = ''
FOR lnItem = 1 TO 100
lcValue = lcValue + laArray[lnItem] + ','
NEXT lnItem
? LEN(lcValue)
1) 2.660.750
2) 2.443.080
3) 2.788.370
and changing the array to 1000 elements I've got 24.882.460
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges
