Why do boolean indicator outputs toggle when true is written repeatedly?

Hi,
I'm using an LED boolean indicator in a sub vi connected to an output terminal.
If TRUE is repeatedly written to it then it toggles between ON and OFF as though it were a push button switch and each TRUE received was someone pushing the switch.
If I disconnect it from the output terminal then it behaves as expected, staying ON if TRUE is repeatedly received.
Why does it do this, how can I fix it?
Also, how can I turn all breakpoints off collectively without removing them?
Thanks,
Dave G
(LabView V7.0)

Hi Dave,
go to File>>VI Porperties>>Execution and check if "Clear indiators if called" is checked.
If this is checked it clears the indicator when the VI is called. If you set the value to TRUE this value will be given back to the calling VI.
This behaviour was introduced to allow simpler programming. Think of a programm with various cases. There is only one case where you want to set the indicator to TRUE. If you haven't the above flag you need to set it to FALSE in all other cases. This forces to move the terminal outside of the case and to wire a lot of FALSE constants to the tunnel (nowadays we have the "use default if unwired" mechanism which makes the flag unnesseccary).
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions

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Panics Since Last Report:          1
Thu Feb 6 15:29:32 2014
panic(cpu 1 caller 0xffffff80002c4794): Kernel trap at 0xffffff7f81d89ff3, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xffffff7acd4a2a7c, CR3: 0x0000000085d3b000, CR4: 0x0000000000000660
RAX: 0xffffffff4bffff56, RBX: 0x0000000000000000, RCX: 0x0000000000000001, RDX: 0x0000000000000000
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R8: 0x0000000000000001, R9: 0x0000000000000000, R10: 0xffffff7f81d44200, R11: 0xffffff800f8b45e8
R12: 0xffffff8065292000, R13: 0xffffff807867b860, R14: 0x0000000000000001, R15: 0xffffff7acd4a2a7c
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0xffffff807867b470 : 0xffffff8000220792
0xffffff807867b4f0 : 0xffffff80002c4794
0xffffff807867b6a0 : 0xffffff80002da55d
0xffffff807867b6c0 : 0xffffff7f81d89ff3
0xffffff807867b800 : 0xffffff7f81d8a694
0xffffff807867b890 : 0xffffff7f81d8b4ed
0xffffff807867b8d0 : 0xffffff7f81d472a1
0xffffff807867ba40 : 0xffffff7f81d8bd6d
0xffffff807867bb00 : 0xffffff7f81d44346
0xffffff807867bb60 : 0xffffff8000655f3e
0xffffff807867bb80 : 0xffffff800065681a
0xffffff807867bbe0 : 0xffffff8000656fbb
0xffffff807867bd20 : 0xffffff80002a3f08
0xffffff807867be20 : 0xffffff8000223096
0xffffff807867be50 : 0xffffff80002148a9
0xffffff807867beb0 : 0xffffff800021bbd8
0xffffff807867bf10 : 0xffffff80002af140
0xffffff807867bfb0 : 0xffffff80002dab5e
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USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 2
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0x26500000 / 3
USB Device: USB2.0 Hub, 0x05e3 (Genesys Logic, Inc.), 0x0608, 0x26200000 / 2
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2
USB Device: Hub in Apple Extended USB Keyboard, apple_vendor_id, 0x1003, 0x06400000 / 3
USB Device: Apple Extended USB Keyboard, apple_vendor_id, 0x020b, 0x06430000 / 4
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 6

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