How to change the maximum frame rate of the camera by changing the image size?

I have two acA2040-180km cameras which are connected to 2 NI PCIe-1433 framegrabbers, I am monitoring my cameras by LabView, maximum allowable frame rate is about 187 for full resolution images, but I just need a small fraction of the images, I know if I make the images smaller, FPS will get higher, but it isn't possible by changing the image size in NI MAX, I've also tried to change the size by defining the region of interest in the grab setup.vi, but it would be after going to camera so it isn't the case as well, so I need a VI to go to the camera before starting to take photo and define the region of interest which is going to be captured, would you please help me to find it?
Please help me, this problem get me stuck!!!

Have you tried changing the image size using property nodes as Bruce suggested? Do remember with Basler cameras, reducing the width only will not affect the transfer speed but the reducing the height will. Have a look at the frame calculator to understand what you frame rates you can acheive with certain settings:
Basler Frame Rate Calculator
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

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How do I change the export frame rate?

my video came out super twitchy when i exported it and was told i need to change to export frame rate.
here is an 8 sec clip of what i am talking about.
http://www.youtube.com/watch?v=cuQ5VduBUK
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General
Complete name                            : my.mov
Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt
File size                                : 168 GiB
Duration                                 : 2h 18mn
Overall bit rate mode                    : Variable
Overall bit rate                         : 173 Mbps
Encoded date                             : UTC 2014-09-08 17:29:17
Tagged date                              : UTC 2014-09-08 20:14:37
Writing library                          : aapl
©TIM                                     : 00:00:00:00
©TSC                                     : 2997
©TSZ                                     : 125
Video
ID                                       : 1
Format                                   : ProRes
Format version                           : Version 0
Format profile                           : High
Codec ID                                 : apch
Duration                                 : 2h 18mn
Bit rate mode                            : Variable
Bit rate                                 : 173 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:2
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 3.484
Stream size                              : 168 GiB (100%)
Writing library                          : Apple
Language                                 : English
Encoded date                             : UTC 2014-09-08 17:29:17
Tagged date                              : UTC 2014-09-08 17:29:17
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
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ID                                       : 2
Type                                     : Time code
Format                                   : QuickTime TC
Duration                                 : 2h 18mn
Time code of first frame                 : 00:00:00:00
Time code settings                       : Striped
Language                                 : English
Encoded date                             : UTC 2014-09-08 17:29:17
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Message was edited by: AppleMan1958

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How to change the maximum frame rate of the camera by changing the image size?

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