Retrieve Info to create Field a Leader

[Julio_Soto]

I want to create a leader that is linked to information about a block. So it looks like I need to get this ObjID information for the specific block. 

HOwever when I inspect the block I only see this

This does not look like the info I need.

Next I need the info the a specific lookup parameter. In this block the parameter name is "Length" but it shows up as "Parameter(68)" when I manually create a field. I don't think I can guarantee that this parameter is #68 every time.  I don't even know what that's base on because there are not 68 parameters in this block.  How can I get that parameter number?

[Sea-Haven · Accepted solution]

Ok the object id example 1st.

(setq obj (vlax-ename->vla-object (car (entsel "\nPick pline"))))
(setq id  (VLAX-INVOKE-METHOD (VLA-GET-UTILITY (VLA-GET-ACTIVEDOCUMENT  (VLAX-GET-ACAD-OBJECT))) 'GETOBJECTIDSTRING OBJ :VLAX-FALSE))

Not sure what object your picking is it an attribute ? If so use of Nentsel may be the way to go.

[Julio_Soto]

that worked. now I just need a way to get the parameter #.  

I've read through LeeMacs Dynamic Block functions, but those return the value of a named parameter. I don't in those functions anything related to getting a "Parameter #"

https://www.lee-mac.com/dynamicblockfunctions.html

[Julio_Soto · Accepted solution]

I found the solution in AUGI forums. Man, it would've taken forever to figure this one out. It was very helpful

https://forums.augi.com/showthread.php?117056-Create-Field-to-DB-Param-Pragramatically&p=1356168#pos...