Here's what I would like to do. I want to select a certain model number (drop down validation list) which would then let me select from a list of parts for that particular model. I can accomplish this rather crudely and I am thinking that someone must have a better method. I use a table with all the model numbers and parts numbers associated with each. When I select the model from the list, it copies all the part numbers to another list area using a series of choose and match functions. This was fine until I surpassed 30 model numbers. (It seems that 29 columns is the most that will work with these functions) Following is one of the equations that worked up to 29 items: (bh301 is one column too many)
=IF(CHOOSE((MATCH
($W$301,$X$301:$X$330,0)),AF301,AG301,AH301,AI301,AJ301,AK301,AL301,AM301,A
N301,AO301,AP301,AQ301,AR301,AS301,AT301,AU301,AV301,AW301,AX301,AY301,AZ30
1,BA301,BB301,BC301,BD301,BE301,BF301,BG301,BH301)=0,"",CHOOSE((MATCH
($W$301,$X$301:$X$330,0)),AF301,AG301,AH301,AI301,AJ301,AK301,AL301,AM301,A
N301,AO301,AP301,AQ301,AR301,AS301,AT301,AU301,AV301,AW301,AX301,AY301,AZ30
1,BA301,BB301,BC301,BD301,BE301,BF301,BG301,BH301))
=IF(CHOOSE((MATCH
($W$301,$X$301:$X$330,0)),AF301,AG301,AH301,AI301,AJ301,AK301,AL301,AM301,A
N301,AO301,AP301,AQ301,AR301,AS301,AT301,AU301,AV301,AW301,AX301,AY301,AZ30
1,BA301,BB301,BC301,BD301,BE301,BF301,BG301,BH301)=0,"",CHOOSE((MATCH
($W$301,$X$301:$X$330,0)),AF301,AG301,AH301,AI301,AJ301,AK301,AL301,AM301,A
N301,AO301,AP301,AQ301,AR301,AS301,AT301,AU301,AV301,AW301,AX301,AY301,AZ30
1,BA301,BB301,BC301,BD301,BE301,BF301,BG301,BH301))