Animated Network Background Image

I created a little script to update Network Background images
using houdini`s timeline callback , just create a new shelf tool and copy and paste my code
this tool works as toggle mode . click to activate , click again to deactivate

Code :

       




import hou 
chrysl666BG_padding = 0 

#CREATE BG
def updateBG(event_type,frame):
    #create initial vars 
    imagePath=""
    strFrame = str(frame)

    
    #get editor and BGimage infos
    editorHolder = hou.ui.paneTabOfType(hou.paneTabType.NetworkEditor)
    BGLIST = editorHolder.backgroundImages()
    
    #if BG image is not created  -- do create
    if(len(BGLIST) < 1 ):
        #start holders
        imageHolder = hou.NetworkImage()
        imagePath = hou.ui.selectFile(start_directory="HIP" , title = "SELECT FRAMES ")
        # check padzeros
        pathParse = imagePath.rsplit(".",2)        
        if( len(pathParse[1]) > 2 ):
            global chrysl666BG_padding
            chrysl666BG_padding  = int(pathParse[1][2])
            strFrame = str(frame).zfill(chrysl666BG_padding) # apply padding
        # build path string 
        newPath = pathParse[0]+"."+strFrame+"."+pathParse[2]
        # apply Background Image 
        imageHolder.setPath(newPath)
        imageHolder.setRect(hou.BoundingRect(0, 0, 5, 5))
        editorHolder.setBackgroundImages([imageHolder])
    else: # BG image is already created 
        #starts holders
        imageHolder = BGLIST[0]
        imagePath = imageHolder.path()
        #chack padzeros
        pathParse = imagePath.rsplit(".",2)
        #padding  = len(pathParse[1])
        global chrysl666BG_padding
        strFrame = str(frame).zfill(chrysl666BG_padding) # apply padding
        # build path string 
        newPath = pathParse[0]+"."+strFrame+"."+pathParse[2]
        # apply Background Image 
        imageHolder.setPath(newPath)
        editorHolder.setBackgroundImages([imageHolder])
        

#check for playbar events when tool is clicked 
events =  hou.playbar.eventCallbacks() 
if(len(events) <1):
    #if not events, create it
    updateBG(0,hou.intFrame())
    hou.ui.displayMessage("BG IMAGE CREATED")
    hou.playbar.addEventCallback(updateBG)
else:
    # events exist  delete it
    hou.playbar.clearEventCallbacks()   
    hou.ui.displayMessage("BG IMAGE EVENT DELETED")