Object Attached Multileader

I am trying to create a lisp that reads the Z elevation of an object and writes it in a multileader's text and also have the multileader (with text) be associated to this object. I am starting with just trying to read the elevation and write it to the multileader text. The object is a piece of pipe and has both a top and bottom elevation. Is there a way to read only one of them? And if so, is there a way to only read the numbers instead of the prefix and the numbers?

e.g.

(defun PeelString (st / s)
 (if (eq (type st) 'STR)
   (progn (foreach x (vl-string->list st)
            (if (not (or (< 65 x 90) (< 97 x 122)))
              (setq s (cons x s))
            )
          )
          (vl-list->string (reverse s))
   )
 )
)

(peelstring  "TOP 11'-7 1/4\", BOT 10' -10 5/8\"")

Result .

" 11'-7 1/4\",  10' -10 5/8\"" 

I suggest you start by creating a FIELD, which points to an OBJECT which you specify.

Once that OBJECT has been identified there will be quite a list of properties available in the

FIELD definition dialog.

I imagine that you can choose either of them from that list.

Additionally should you want to, you can add a PREFIX or SUFFIX to that information,

which I believe will be displayed entirely numerically.

Once you have gotten the hang of that FIELD CREATION you can

create a custom MULTILEADER and include such a FIELD inserted into, or as an ATTRIBUTE.

See this post from Ammobake http://www.cadtutor.net/forum/showthread.php?75747-Is-there-an-option-to-circle-multileader-text

as it may prove helpful.

Tharwat to the rescue!

Tharwat has likely rendered my suggestions obsolete, which is a good thing.

I suggest you start by creating a FIELD,...

The pipe is drawn with a 3rd party program and when I try using a field, these properties are not available for use. Thanks for the suggestion though.

@Tharwat - thank you for the help. Does PeelString accept wildcards?

@Tharwat - thank you for the help.

You're welcome ,

Does PeelString accept wildcards?

No it doesn't , What you have in mind against wildcards ?

Here is a 'console demonstration' to point you in the right direction:

_$ ([color=blue]setq [/color]s [color=darkred]"TOP 11'-7 1/4\", BOT 10'-10 5/8\""[/color])
[color=darkred]"TOP 11'-7 1/4\", BOT 10'-10 5/8\""[/color]
_$ ([color=blue]setq [/color]i ([color=blue]vl-string-position[/color] 44 s))
14
_$ ([color=blue]setq [/color]a ([color=blue]substr [/color]s 5 ([color=blue]-[/color] i 4)))
[color=darkred]"11'-7 1/4\""[/color]
_$ ([color=blue]setq [/color]b ([color=blue]substr [/color]s ([color=blue]+[/color] i 7)))
[color=darkred]"10'-10 5/8\""[/color]
_$ ([color=blue]distof [/color]a 4)
139.25
_$ ([color=blue]distof [/color]b 4)
130.625

No it doesn't , What you have on mind against wildcards ?

If the prefix "BOT" changed I could have a wildcard in its place to catch anything in its location.

If the prefix "BOT" changed I could have a wildcard in its place to catch anything in its location.

My function PeelString removes the all Alphabetic characters from the string and whatever the char is , it would be remove .